640920142

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1\times {\mathrm{13103}}^1$

素因数の和:13803

約数の個数: 16

約数和(自身を含む): 988932672

約数和(自身を除く): 348012530

約数列:

[1, 2, 37, 74, 661, 1322, 13103, 24457, 26206, 48914, 484811, 969622, 8661083, 17322166, 320460071, 640920142]

約数ペア:

[(1, 640920142), (2, 320460071), (37, 17322166), (74, 8661083), (661, 969622), (1322, 484811), (13103, 48914), (24457, 26206)]