20921137160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{73}}^1\times {\mathrm{769}}^1$

素因数の和:893

約数の個数: 256

約数和(自身を含む): 60061478400

約数和(自身を除く): 39140341240

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 73, 77, 88, 110, 121, 140, 146, 154, 220, 242, 280, 292, 308, 365, 385, 440, 484, 511, 584, 605, 616, 730, 769, 770, 803, 847, 968, 1022, 1210, 1331, 1460, 1538, 1540, 1606, 1694, 2044, 2420, 2555, 2662, 2920, 3076, 3080, 3212, 3388, 3845, 4015, 4088, 4235, 4840, 5110, 5324, 5383, 5621, 6152, 6424, 6655, 6776, 7690, 8030, 8459, 8470, 8833, 9317, 10220, 10648, 10766, 11242, 13310, 15380, 16060, 16918, 16940, 17666, 18634, 20440, 21532, 22484, 26620, 26915, 28105, 30760, 32120, 33836, 33880, 35332, 37268, 42295, 43064, 44165, 44968, 46585, 53240, 53830, 56137, 56210, 59213, 61831, 67672, 70664, 74536, 84590, 88330, 93049, 93170, 97163, 107660, 112274, 112420, 118426, 123662, 169180, 176660, 186098, 186340, 194326, 215320, 224548, 224840, 236852, 247324, 280685, 296065, 309155, 338360, 353320, 372196, 372680, 388652, 392959, 449096, 465245, 473704, 485815, 494648, 561370, 592130, 617507, 618310, 651343, 680141, 744392, 777304, 785918, 930490, 971630, 1023539, 1122740, 1184260, 1235014, 1236620, 1302686, 1360282, 1571836, 1860980, 1943260, 1964795, 2047078, 2245480, 2368520, 2470028, 2473240, 2605372, 2720564, 3087535, 3143672, 3256715, 3400705, 3721960, 3886520, 3929590, 4094156, 4322549, 4940056, 5117695, 5210744, 5441128, 6175070, 6513430, 6792577, 6801410, 7164773, 7859180, 8188312, 8645098, 10235390, 12350140, 13026860, 13585154, 13602820, 14329546, 15718360, 17290196, 20470780, 21612745, 24700280, 26053720, 27170308, 27205640, 28659092, 33962885, 34580392, 35823865, 40941560, 43225490, 47548039, 54340616, 57318184, 67925770, 71647730, 74718347, 86450980, 95096078, 135851540, 143295460, 149436694, 172901960, 190192156, 237740195, 271703080, 286590920, 298873388, 373591735, 380384312, 475480390, 523028429, 597746776, 747183470, 950960780, 1046056858, 1494366940, 1901921560, 2092113716, 2615142145, 2988733880, 4184227432, 5230284290, 10460568580, 20921137160]

約数ペア:

[(1, 20921137160), (2, 10460568580), (4, 5230284290), (5, 4184227432), (7, 2988733880), (8, 2615142145), (10, 2092113716), (11, 1901921560), (14, 1494366940), (20, 1046056858), (22, 950960780), (28, 747183470), (35, 597746776), (40, 523028429), (44, 475480390), (55, 380384312), (56, 373591735), (70, 298873388), (73, 286590920), (77, 271703080), (88, 237740195), (110, 190192156), (121, 172901960), (140, 149436694), (146, 143295460), (154, 135851540), (220, 95096078), (242, 86450980), (280, 74718347), (292, 71647730), (308, 67925770), (365, 57318184), (385, 54340616), (440, 47548039), (484, 43225490), (511, 40941560), (584, 35823865), (605, 34580392), (616, 33962885), (730, 28659092), (769, 27205640), (770, 27170308), (803, 26053720), (847, 24700280), (968, 21612745), (1022, 20470780), (1210, 17290196), (1331, 15718360), (1460, 14329546), (1538, 13602820), (1540, 13585154), (1606, 13026860), (1694, 12350140), (2044, 10235390), (2420, 8645098), (2555, 8188312), (2662, 7859180), (2920, 7164773), (3076, 6801410), (3080, 6792577), (3212, 6513430), (3388, 6175070), (3845, 5441128), (4015, 5210744), (4088, 5117695), (4235, 4940056), (4840, 4322549), (5110, 4094156), (5324, 3929590), (5383, 3886520), (5621, 3721960), (6152, 3400705), (6424, 3256715), (6655, 3143672), (6776, 3087535), (7690, 2720564), (8030, 2605372), (8459, 2473240), (8470, 2470028), (8833, 2368520), (9317, 2245480), (10220, 2047078), (10648, 1964795), (10766, 1943260), (11242, 1860980), (13310, 1571836), (15380, 1360282), (16060, 1302686), (16918, 1236620), (16940, 1235014), (17666, 1184260), (18634, 1122740), (20440, 1023539), (21532, 971630), (22484, 930490), (26620, 785918), (26915, 777304), (28105, 744392), (30760, 680141), (32120, 651343), (33836, 618310), (33880, 617507), (35332, 592130), (37268, 561370), (42295, 494648), (43064, 485815), (44165, 473704), (44968, 465245), (46585, 449096), (53240, 392959), (53830, 388652), (56137, 372680), (56210, 372196), (59213, 353320), (61831, 338360), (67672, 309155), (70664, 296065), (74536, 280685), (84590, 247324), (88330, 236852), (93049, 224840), (93170, 224548), (97163, 215320), (107660, 194326), (112274, 186340), (112420, 186098), (118426, 176660), (123662, 169180)]