81397510

素因数分解:

$2^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{44971}}^1$

素因数の和:45159

約数の個数: 16

約数和(自身を含む): 147328272

約数和(自身を除く): 65930762

約数列:

[1, 2, 5, 10, 181, 362, 905, 1810, 44971, 89942, 224855, 449710, 8139751, 16279502, 40698755, 81397510]

約数ペア:

[(1, 81397510), (2, 40698755), (5, 16279502), (10, 8139751), (181, 449710), (362, 224855), (905, 89942), (1810, 44971)]