40039240

素因数分解:

$2^3\times 5^1\times {\mathrm{1000981}}^1$

素因数の和:1000992

約数の個数: 16

約数和(自身を含む): 90088380

約数和(自身を除く): 50049140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1000981, 2001962, 4003924, 5004905, 8007848, 10009810, 20019620, 40039240]

約数ペア:

[(1, 40039240), (2, 20019620), (4, 10009810), (5, 8007848), (8, 5004905), (10, 4003924), (20, 2001962), (40, 1000981)]