81284280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{463}}^1$

素因数の和:514

約数の個数: 256

約数和(自身を含む): 320716800

約数和(自身を除く): 239432520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 19, 20, 21, 22, 24, 28, 30, 33, 35, 38, 40, 42, 44, 55, 56, 57, 60, 66, 70, 76, 77, 84, 88, 95, 105, 110, 114, 120, 132, 133, 140, 152, 154, 165, 168, 190, 209, 210, 220, 228, 231, 264, 266, 280, 285, 308, 330, 380, 385, 399, 418, 420, 440, 456, 462, 463, 532, 570, 616, 627, 660, 665, 760, 770, 798, 836, 840, 924, 926, 1045, 1064, 1140, 1155, 1254, 1320, 1330, 1389, 1463, 1540, 1596, 1672, 1848, 1852, 1995, 2090, 2280, 2310, 2315, 2508, 2660, 2778, 2926, 3080, 3135, 3192, 3241, 3704, 3990, 4180, 4389, 4620, 4630, 5016, 5093, 5320, 5556, 5852, 6270, 6482, 6945, 7315, 7980, 8360, 8778, 8797, 9240, 9260, 9723, 10186, 11112, 11704, 12540, 12964, 13890, 14630, 15279, 15960, 16205, 17556, 17594, 18520, 19446, 20372, 21945, 25080, 25465, 25928, 26391, 27780, 29260, 30558, 32410, 35112, 35188, 35651, 38892, 40744, 43890, 43985, 48615, 50930, 52782, 55560, 58520, 61116, 61579, 64820, 70376, 71302, 76395, 77784, 87780, 87970, 96767, 97230, 101860, 105564, 106953, 122232, 123158, 129640, 131955, 142604, 152790, 175560, 175940, 178255, 184737, 193534, 194460, 203720, 211128, 213906, 246316, 263910, 285208, 290301, 305580, 307895, 351880, 356510, 369474, 387068, 388920, 427812, 483835, 492632, 527820, 534765, 580602, 611160, 615790, 677369, 713020, 738948, 774136, 855624, 923685, 967670, 1055640, 1069530, 1161204, 1231580, 1354738, 1426040, 1451505, 1477896, 1847370, 1935340, 2032107, 2139060, 2322408, 2463160, 2709476, 2903010, 3386845, 3694740, 3870680, 4064214, 4278120, 5418952, 5806020, 6773690, 7389480, 8128428, 10160535, 11612040, 13547380, 16256856, 20321070, 27094760, 40642140, 81284280]

約数ペア:

[(1, 81284280), (2, 40642140), (3, 27094760), (4, 20321070), (5, 16256856), (6, 13547380), (7, 11612040), (8, 10160535), (10, 8128428), (11, 7389480), (12, 6773690), (14, 5806020), (15, 5418952), (19, 4278120), (20, 4064214), (21, 3870680), (22, 3694740), (24, 3386845), (28, 2903010), (30, 2709476), (33, 2463160), (35, 2322408), (38, 2139060), (40, 2032107), (42, 1935340), (44, 1847370), (55, 1477896), (56, 1451505), (57, 1426040), (60, 1354738), (66, 1231580), (70, 1161204), (76, 1069530), (77, 1055640), (84, 967670), (88, 923685), (95, 855624), (105, 774136), (110, 738948), (114, 713020), (120, 677369), (132, 615790), (133, 611160), (140, 580602), (152, 534765), (154, 527820), (165, 492632), (168, 483835), (190, 427812), (209, 388920), (210, 387068), (220, 369474), (228, 356510), (231, 351880), (264, 307895), (266, 305580), (280, 290301), (285, 285208), (308, 263910), (330, 246316), (380, 213906), (385, 211128), (399, 203720), (418, 194460), (420, 193534), (440, 184737), (456, 178255), (462, 175940), (463, 175560), (532, 152790), (570, 142604), (616, 131955), (627, 129640), (660, 123158), (665, 122232), (760, 106953), (770, 105564), (798, 101860), (836, 97230), (840, 96767), (924, 87970), (926, 87780), (1045, 77784), (1064, 76395), (1140, 71302), (1155, 70376), (1254, 64820), (1320, 61579), (1330, 61116), (1389, 58520), (1463, 55560), (1540, 52782), (1596, 50930), (1672, 48615), (1848, 43985), (1852, 43890), (1995, 40744), (2090, 38892), (2280, 35651), (2310, 35188), (2315, 35112), (2508, 32410), (2660, 30558), (2778, 29260), (2926, 27780), (3080, 26391), (3135, 25928), (3192, 25465), (3241, 25080), (3704, 21945), (3990, 20372), (4180, 19446), (4389, 18520), (4620, 17594), (4630, 17556), (5016, 16205), (5093, 15960), (5320, 15279), (5556, 14630), (5852, 13890), (6270, 12964), (6482, 12540), (6945, 11704), (7315, 11112), (7980, 10186), (8360, 9723), (8778, 9260), (8797, 9240)]