61661680

素因数分解:

$2^4\times 5^1\times {\mathrm{770771}}^1$

素因数の和:770784

約数の個数: 20

約数和(自身を含む): 143363592

約数和(自身を除く): 81701912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 770771, 1541542, 3083084, 3853855, 6166168, 7707710, 12332336, 15415420, 30830840, 61661680]

約数ペア:

[(1, 61661680), (2, 30830840), (4, 15415420), (5, 12332336), (8, 7707710), (10, 6166168), (16, 3853855), (20, 3083084), (40, 1541542), (80, 770771)]