20535804

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1$

素因数の和:339

約数の個数: 72

約数和(自身を含む): 54250560

約数和(自身を除く): 33714756

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 53, 94, 106, 141, 159, 188, 212, 229, 282, 318, 423, 458, 477, 564, 636, 687, 846, 916, 954, 1374, 1692, 1908, 2061, 2491, 2748, 4122, 4982, 7473, 8244, 9964, 10763, 12137, 14946, 21526, 22419, 24274, 29892, 32289, 36411, 43052, 44838, 48548, 64578, 72822, 89676, 96867, 109233, 129156, 145644, 193734, 218466, 387468, 436932, 570439, 1140878, 1711317, 2281756, 3422634, 5133951, 6845268, 10267902, 20535804]

約数ペア:

[(1, 20535804), (2, 10267902), (3, 6845268), (4, 5133951), (6, 3422634), (9, 2281756), (12, 1711317), (18, 1140878), (36, 570439), (47, 436932), (53, 387468), (94, 218466), (106, 193734), (141, 145644), (159, 129156), (188, 109233), (212, 96867), (229, 89676), (282, 72822), (318, 64578), (423, 48548), (458, 44838), (477, 43052), (564, 36411), (636, 32289), (687, 29892), (846, 24274), (916, 22419), (954, 21526), (1374, 14946), (1692, 12137), (1908, 10763), (2061, 9964), (2491, 8244), (2748, 7473), (4122, 4982)]