129630320

素因数分解:

$2^4\times 5^1\times {\mathrm{1620379}}^1$

素因数の和:1620392

約数の個数: 20

約数和(自身を含む): 301390680

約数和(自身を除く): 171760360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1620379, 3240758, 6481516, 8101895, 12963032, 16203790, 25926064, 32407580, 64815160, 129630320]

約数ペア:

[(1, 129630320), (2, 64815160), (4, 32407580), (5, 25926064), (8, 16203790), (10, 12963032), (16, 8101895), (20, 6481516), (40, 3240758), (80, 1620379)]