821020460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3157771}}^1$

素因数の和:3157793

約数の個数: 24

約数和(自身を含む): 1856769936

約数和(自身を除く): 1035749476

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 3157771, 6315542, 12631084, 15788855, 31577710, 41051023, 63155420, 82102046, 164204092, 205255115, 410510230, 821020460]

約数ペア:

[(1, 821020460), (2, 410510230), (4, 205255115), (5, 164204092), (10, 82102046), (13, 63155420), (20, 41051023), (26, 31577710), (52, 15788855), (65, 12631084), (130, 6315542), (260, 3157771)]