81707428

素因数分解:

$2^2\times {\mathrm{11}}^3\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:289

約数の個数: 48

約数和(自身を含む): 159868800

約数和(自身を除く): 78161372

約数列:

[1, 2, 4, 11, 22, 44, 103, 121, 149, 206, 242, 298, 412, 484, 596, 1133, 1331, 1639, 2266, 2662, 3278, 4532, 5324, 6556, 12463, 15347, 18029, 24926, 30694, 36058, 49852, 61388, 72116, 137093, 168817, 198319, 274186, 337634, 396638, 548372, 675268, 793276, 1856987, 3713974, 7427948, 20426857, 40853714, 81707428]

約数ペア:

[(1, 81707428), (2, 40853714), (4, 20426857), (11, 7427948), (22, 3713974), (44, 1856987), (103, 793276), (121, 675268), (149, 548372), (206, 396638), (242, 337634), (298, 274186), (412, 198319), (484, 168817), (596, 137093), (1133, 72116), (1331, 61388), (1639, 49852), (2266, 36058), (2662, 30694), (3278, 24926), (4532, 18029), (5324, 15347), (6556, 12463)]