31196680

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{991}}^1$

素因数の和:1789

約数の個数: 32

約数和(自身を含む): 70352640

約数和(自身を除く): 39155960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 991, 1574, 1982, 3148, 3935, 3964, 4955, 6296, 7870, 7928, 9910, 15740, 19820, 31480, 39640, 779917, 1559834, 3119668, 3899585, 6239336, 7799170, 15598340, 31196680]

約数ペア:

[(1, 31196680), (2, 15598340), (4, 7799170), (5, 6239336), (8, 3899585), (10, 3119668), (20, 1559834), (40, 779917), (787, 39640), (991, 31480), (1574, 19820), (1982, 15740), (3148, 9910), (3935, 7928), (3964, 7870), (4955, 6296)]