20161898964

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{991}}^1\times {\mathrm{10663}}^1$

素因数の和:11717

約数の個数: 72

約数和(自身を含む): 51983672832

約数和(自身を除く): 31821773868

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 954, 991, 1908, 1982, 2973, 3964, 5946, 8919, 10663, 11892, 17838, 21326, 31989, 35676, 42652, 52523, 63978, 95967, 105046, 127956, 157569, 191934, 210092, 315138, 383868, 472707, 565139, 630276, 945414, 1130278, 1695417, 1890828, 2260556, 3390834, 5086251, 6781668, 10172502, 10567033, 20345004, 21134066, 31701099, 42268132, 63402198, 95103297, 126804396, 190206594, 380413188, 560052749, 1120105498, 1680158247, 2240210996, 3360316494, 5040474741, 6720632988, 10080949482, 20161898964]

約数ペア:

[(1, 20161898964), (2, 10080949482), (3, 6720632988), (4, 5040474741), (6, 3360316494), (9, 2240210996), (12, 1680158247), (18, 1120105498), (36, 560052749), (53, 380413188), (106, 190206594), (159, 126804396), (212, 95103297), (318, 63402198), (477, 42268132), (636, 31701099), (954, 21134066), (991, 20345004), (1908, 10567033), (1982, 10172502), (2973, 6781668), (3964, 5086251), (5946, 3390834), (8919, 2260556), (10663, 1890828), (11892, 1695417), (17838, 1130278), (21326, 945414), (31989, 630276), (35676, 565139), (42652, 472707), (52523, 383868), (63978, 315138), (95967, 210092), (105046, 191934), (127956, 157569)]