20977320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:164

約数の個数: 256

約数和(自身を含む): 82736640

約数和(自身を除く): 61759320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 17, 20, 21, 24, 26, 28, 30, 34, 35, 39, 40, 42, 51, 52, 56, 60, 65, 68, 70, 78, 84, 85, 91, 102, 104, 105, 113, 119, 120, 130, 136, 140, 156, 168, 170, 182, 195, 204, 210, 221, 226, 238, 255, 260, 273, 280, 312, 339, 340, 357, 364, 390, 408, 420, 442, 452, 455, 476, 510, 520, 546, 565, 595, 663, 678, 680, 714, 728, 780, 791, 840, 884, 904, 910, 952, 1020, 1092, 1105, 1130, 1190, 1326, 1356, 1365, 1428, 1469, 1547, 1560, 1582, 1695, 1768, 1785, 1820, 1921, 2040, 2184, 2210, 2260, 2373, 2380, 2652, 2712, 2730, 2856, 2938, 3094, 3164, 3315, 3390, 3570, 3640, 3842, 3955, 4407, 4420, 4520, 4641, 4746, 4760, 5304, 5460, 5763, 5876, 6188, 6328, 6630, 6780, 7140, 7345, 7684, 7735, 7910, 8814, 8840, 9282, 9492, 9605, 10283, 10920, 11526, 11752, 11865, 12376, 13260, 13447, 13560, 14280, 14690, 15368, 15470, 15820, 17628, 18564, 18984, 19210, 20566, 22035, 23052, 23205, 23730, 24973, 26520, 26894, 28815, 29380, 30849, 30940, 31640, 35256, 37128, 38420, 40341, 41132, 44070, 46104, 46410, 47460, 49946, 51415, 53788, 57630, 58760, 61698, 61880, 67235, 74919, 76840, 80682, 82264, 88140, 92820, 94920, 99892, 102830, 107576, 115260, 123396, 124865, 134470, 149838, 154245, 161364, 174811, 176280, 185640, 199784, 201705, 205660, 230520, 246792, 249730, 268940, 299676, 308490, 322728, 349622, 374595, 403410, 411320, 499460, 524433, 537880, 599352, 616980, 699244, 749190, 806820, 874055, 998920, 1048866, 1233960, 1398488, 1498380, 1613640, 1748110, 2097732, 2622165, 2996760, 3496220, 4195464, 5244330, 6992440, 10488660, 20977320]

約数ペア:

[(1, 20977320), (2, 10488660), (3, 6992440), (4, 5244330), (5, 4195464), (6, 3496220), (7, 2996760), (8, 2622165), (10, 2097732), (12, 1748110), (13, 1613640), (14, 1498380), (15, 1398488), (17, 1233960), (20, 1048866), (21, 998920), (24, 874055), (26, 806820), (28, 749190), (30, 699244), (34, 616980), (35, 599352), (39, 537880), (40, 524433), (42, 499460), (51, 411320), (52, 403410), (56, 374595), (60, 349622), (65, 322728), (68, 308490), (70, 299676), (78, 268940), (84, 249730), (85, 246792), (91, 230520), (102, 205660), (104, 201705), (105, 199784), (113, 185640), (119, 176280), (120, 174811), (130, 161364), (136, 154245), (140, 149838), (156, 134470), (168, 124865), (170, 123396), (182, 115260), (195, 107576), (204, 102830), (210, 99892), (221, 94920), (226, 92820), (238, 88140), (255, 82264), (260, 80682), (273, 76840), (280, 74919), (312, 67235), (339, 61880), (340, 61698), (357, 58760), (364, 57630), (390, 53788), (408, 51415), (420, 49946), (442, 47460), (452, 46410), (455, 46104), (476, 44070), (510, 41132), (520, 40341), (546, 38420), (565, 37128), (595, 35256), (663, 31640), (678, 30940), (680, 30849), (714, 29380), (728, 28815), (780, 26894), (791, 26520), (840, 24973), (884, 23730), (904, 23205), (910, 23052), (952, 22035), (1020, 20566), (1092, 19210), (1105, 18984), (1130, 18564), (1190, 17628), (1326, 15820), (1356, 15470), (1365, 15368), (1428, 14690), (1469, 14280), (1547, 13560), (1560, 13447), (1582, 13260), (1695, 12376), (1768, 11865), (1785, 11752), (1820, 11526), (1921, 10920), (2040, 10283), (2184, 9605), (2210, 9492), (2260, 9282), (2373, 8840), (2380, 8814), (2652, 7910), (2712, 7735), (2730, 7684), (2856, 7345), (2938, 7140), (3094, 6780), (3164, 6630), (3315, 6328), (3390, 6188), (3570, 5876), (3640, 5763), (3842, 5460), (3955, 5304), (4407, 4760), (4420, 4746), (4520, 4641)]