2811640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5407}}^1$

素因数の和:5431

約数の個数: 32

約数和(自身を含む): 6814080

約数和(自身を除く): 4002440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 5407, 10814, 21628, 27035, 43256, 54070, 70291, 108140, 140582, 216280, 281164, 351455, 562328, 702910, 1405820, 2811640]

約数ペア:

[(1, 2811640), (2, 1405820), (4, 702910), (5, 562328), (8, 351455), (10, 281164), (13, 216280), (20, 140582), (26, 108140), (40, 70291), (52, 54070), (65, 43256), (104, 27035), (130, 21628), (260, 10814), (520, 5407)]