660640

素因数分解:

$2^5\times 5^1\times {\mathrm{4129}}^1$

素因数の和:4144

約数の個数: 24

約数和(自身を含む): 1561140

約数和(自身を除く): 900500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 4129, 8258, 16516, 20645, 33032, 41290, 66064, 82580, 132128, 165160, 330320, 660640]

約数ペア:

[(1, 660640), (2, 330320), (4, 165160), (5, 132128), (8, 82580), (10, 66064), (16, 41290), (20, 33032), (32, 20645), (40, 16516), (80, 8258), (160, 4129)]