64765780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1\times {\mathrm{229}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 139104000

約数和(自身を除く): 74338220

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 179, 229, 316, 358, 395, 458, 716, 790, 895, 916, 1145, 1580, 1790, 2290, 3580, 4580, 14141, 18091, 28282, 36182, 40991, 56564, 70705, 72364, 81982, 90455, 141410, 163964, 180910, 204955, 282820, 361820, 409910, 819820, 3238289, 6476578, 12953156, 16191445, 32382890, 64765780]

約数ペア:

[(1, 64765780), (2, 32382890), (4, 16191445), (5, 12953156), (10, 6476578), (20, 3238289), (79, 819820), (158, 409910), (179, 361820), (229, 282820), (316, 204955), (358, 180910), (395, 163964), (458, 141410), (716, 90455), (790, 81982), (895, 72364), (916, 70705), (1145, 56564), (1580, 40991), (1790, 36182), (2290, 28282), (3580, 18091), (4580, 14141)]