1638930984

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{367}}^1$

素因数の和:567

約数の個数: 128

約数和(自身を含む): 4349583360

約数和(自身を除く): 2710652376

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 47, 74, 94, 107, 111, 141, 148, 188, 214, 222, 282, 296, 321, 367, 376, 428, 444, 564, 642, 734, 856, 888, 1101, 1128, 1284, 1468, 1739, 2202, 2568, 2936, 3478, 3959, 4404, 5029, 5217, 6956, 7918, 8808, 10058, 10434, 11877, 13579, 13912, 15087, 15836, 17249, 20116, 20868, 23754, 27158, 30174, 31672, 34498, 39269, 40232, 40737, 41736, 47508, 51747, 54316, 60348, 68996, 78538, 81474, 95016, 103494, 108632, 117807, 120696, 137992, 157076, 162948, 186073, 206988, 235614, 314152, 325896, 372146, 413976, 471228, 558219, 638213, 744292, 942456, 1116438, 1276426, 1452953, 1488584, 1845643, 1914639, 2232876, 2552852, 2905906, 3691286, 3829278, 4358859, 4465752, 5105704, 5536929, 5811812, 7382572, 7658556, 8717718, 11073858, 11623624, 14765144, 15317112, 17435436, 22147716, 34870872, 44295432, 68288791, 136577582, 204866373, 273155164, 409732746, 546310328, 819465492, 1638930984]

約数ペア:

[(1, 1638930984), (2, 819465492), (3, 546310328), (4, 409732746), (6, 273155164), (8, 204866373), (12, 136577582), (24, 68288791), (37, 44295432), (47, 34870872), (74, 22147716), (94, 17435436), (107, 15317112), (111, 14765144), (141, 11623624), (148, 11073858), (188, 8717718), (214, 7658556), (222, 7382572), (282, 5811812), (296, 5536929), (321, 5105704), (367, 4465752), (376, 4358859), (428, 3829278), (444, 3691286), (564, 2905906), (642, 2552852), (734, 2232876), (856, 1914639), (888, 1845643), (1101, 1488584), (1128, 1452953), (1284, 1276426), (1468, 1116438), (1739, 942456), (2202, 744292), (2568, 638213), (2936, 558219), (3478, 471228), (3959, 413976), (4404, 372146), (5029, 325896), (5217, 314152), (6956, 235614), (7918, 206988), (8808, 186073), (10058, 162948), (10434, 157076), (11877, 137992), (13579, 120696), (13912, 117807), (15087, 108632), (15836, 103494), (17249, 95016), (20116, 81474), (20868, 78538), (23754, 68996), (27158, 60348), (30174, 54316), (31672, 51747), (34498, 47508), (39269, 41736), (40232, 40737)]