81407855

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{2999}}^1$

素因数の和:3154

約数の個数: 16

約数和(自身を含む): 100440000

約数和(自身を除く): 19032145

約数列:

[1, 5, 61, 89, 305, 445, 2999, 5429, 14995, 27145, 182939, 266911, 914695, 1334555, 16281571, 81407855]

約数ペア:

[(1, 81407855), (5, 16281571), (61, 1334555), (89, 914695), (305, 266911), (445, 182939), (2999, 27145), (5429, 14995)]