81428840

素因数分解:

$2^3\times 5^1\times {\mathrm{233}}^1\times {\mathrm{8737}}^1$

素因数の和:8981

約数の個数: 32

約数和(自身を含む): 184022280

約数和(自身を除く): 102593440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 233, 466, 932, 1165, 1864, 2330, 4660, 8737, 9320, 17474, 34948, 43685, 69896, 87370, 174740, 349480, 2035721, 4071442, 8142884, 10178605, 16285768, 20357210, 40714420, 81428840]

約数ペア:

[(1, 81428840), (2, 40714420), (4, 20357210), (5, 16285768), (8, 10178605), (10, 8142884), (20, 4071442), (40, 2035721), (233, 349480), (466, 174740), (932, 87370), (1165, 69896), (1864, 43685), (2330, 34948), (4660, 17474), (8737, 9320)]