12941680

素因数分解:

$2^4\times 5^1\times {\mathrm{161771}}^1$

素因数の和:161784

約数の個数: 20

約数和(自身を含む): 30089592

約数和(自身を除く): 17147912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161771, 323542, 647084, 808855, 1294168, 1617710, 2588336, 3235420, 6470840, 12941680]

約数ペア:

[(1, 12941680), (2, 6470840), (4, 3235420), (5, 2588336), (8, 1617710), (10, 1294168), (16, 808855), (20, 647084), (40, 323542), (80, 161771)]