21032840

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3529}}^1$

素因数の和:3689

約数の個数: 32

約数和(自身を含む): 47655000

約数和(自身を除く): 26622160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3529, 5960, 7058, 14116, 17645, 28232, 35290, 70580, 141160, 525821, 1051642, 2103284, 2629105, 4206568, 5258210, 10516420, 21032840]

約数ペア:

[(1, 21032840), (2, 10516420), (4, 5258210), (5, 4206568), (8, 2629105), (10, 2103284), (20, 1051642), (40, 525821), (149, 141160), (298, 70580), (596, 35290), (745, 28232), (1192, 17645), (1490, 14116), (2980, 7058), (3529, 5960)]