1405820

素因数分解:

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

素因数の和:5429

約数の個数: 24

約数和(自身を含む): 3179904

約数和(自身を除く): 1774084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 5407, 10814, 21628, 27035, 54070, 70291, 108140, 140582, 281164, 351455, 702910, 1405820]

約数ペア:

[(1, 1405820), (2, 702910), (4, 351455), (5, 281164), (10, 140582), (13, 108140), (20, 70291), (26, 54070), (52, 27035), (65, 21628), (130, 10814), (260, 5407)]