64486220

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{7481}}^1$

素因数の和:7921

約数の個数: 24

約数和(自身を含む): 135753408

約数和(自身を除く): 71267188

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 4310, 7481, 8620, 14962, 29924, 37405, 74810, 149620, 3224311, 6448622, 12897244, 16121555, 32243110, 64486220]

約数ペア:

[(1, 64486220), (2, 32243110), (4, 16121555), (5, 12897244), (10, 6448622), (20, 3224311), (431, 149620), (862, 74810), (1724, 37405), (2155, 29924), (4310, 14962), (7481, 8620)]