61664920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21713}}^1$

素因数の和:21795

約数の個数: 32

約数和(自身を含む): 140706720

約数和(自身を除く): 79041800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 21713, 43426, 86852, 108565, 173704, 217130, 434260, 868520, 1541623, 3083246, 6166492, 7708115, 12332984, 15416230, 30832460, 61664920]

約数ペア:

[(1, 61664920), (2, 30832460), (4, 15416230), (5, 12332984), (8, 7708115), (10, 6166492), (20, 3083246), (40, 1541623), (71, 868520), (142, 434260), (284, 217130), (355, 173704), (568, 108565), (710, 86852), (1420, 43426), (2840, 21713)]