31914640

素因数分解:

$2^4\times 5^1\times {\mathrm{398933}}^1$

素因数の和:398946

約数の個数: 20

約数和(自身を含む): 74201724

約数和(自身を除く): 42287084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 398933, 797866, 1595732, 1994665, 3191464, 3989330, 6382928, 7978660, 15957320, 31914640]

約数ペア:

[(1, 31914640), (2, 15957320), (4, 7978660), (5, 6382928), (8, 3989330), (10, 3191464), (16, 1994665), (20, 1595732), (40, 797866), (80, 398933)]