18240020

素因数分解:

$2^2\times 5^1\times {\mathrm{701}}^1\times {\mathrm{1301}}^1$

素因数の和:2011

約数の個数: 24

約数和(自身を含む): 38388168

約数和(自身を除く): 20148148

約数列:

[1, 2, 4, 5, 10, 20, 701, 1301, 1402, 2602, 2804, 3505, 5204, 6505, 7010, 13010, 14020, 26020, 912001, 1824002, 3648004, 4560005, 9120010, 18240020]

約数ペア:

[(1, 18240020), (2, 9120010), (4, 4560005), (5, 3648004), (10, 1824002), (20, 912001), (701, 26020), (1301, 14020), (1402, 13010), (2602, 7010), (2804, 6505), (3505, 5204)]