12621680

素因数分解:

$2^4\times 5^1\times {\mathrm{157771}}^1$

素因数の和:157784

約数の個数: 20

約数和(自身を含む): 29345592

約数和(自身を除く): 16723912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157771, 315542, 631084, 788855, 1262168, 1577710, 2524336, 3155420, 6310840, 12621680]

約数ペア:

[(1, 12621680), (2, 6310840), (4, 3155420), (5, 2524336), (8, 1577710), (10, 1262168), (16, 788855), (20, 631084), (40, 315542), (80, 157771)]