40279490

素因数分解:

$2^1\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{2017}}^1$

素因数の和:4021

約数の個数: 16

約数和(自身を含む): 72575352

約数和(自身を除く): 32295862

約数列:

[1, 2, 5, 10, 1997, 2017, 3994, 4034, 9985, 10085, 19970, 20170, 4027949, 8055898, 20139745, 40279490]

約数ペア:

[(1, 40279490), (2, 20139745), (5, 8055898), (10, 4027949), (1997, 20170), (2017, 19970), (3994, 10085), (4034, 9985)]