28837640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55457}}^1$

素因数の和:55481

約数の個数: 32

約数和(自身を含む): 69877080

約数和(自身を除く): 41039440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55457, 110914, 221828, 277285, 443656, 554570, 720941, 1109140, 1441882, 2218280, 2883764, 3604705, 5767528, 7209410, 14418820, 28837640]

約数ペア:

[(1, 28837640), (2, 14418820), (4, 7209410), (5, 5767528), (8, 3604705), (10, 2883764), (13, 2218280), (20, 1441882), (26, 1109140), (40, 720941), (52, 554570), (65, 443656), (104, 277285), (130, 221828), (260, 110914), (520, 55457)]