28079390

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{20201}}^1$

素因数の和:20347

約数の個数: 16

約数和(自身を含む): 50909040

約数和(自身を除く): 22829650

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 20201, 40402, 101005, 202010, 2807939, 5615878, 14039695, 28079390]

約数ペア:

[(1, 28079390), (2, 14039695), (5, 5615878), (10, 2807939), (139, 202010), (278, 101005), (695, 40402), (1390, 20201)]