31395640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8819}}^1$

素因数の和:8919

約数の個数: 32

約数和(自身を含む): 71442000

約数和(自身を除く): 40046360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8819, 17638, 35276, 44095, 70552, 88190, 176380, 352760, 784891, 1569782, 3139564, 3924455, 6279128, 7848910, 15697820, 31395640]

約数ペア:

[(1, 31395640), (2, 15697820), (4, 7848910), (5, 6279128), (8, 3924455), (10, 3139564), (20, 1569782), (40, 784891), (89, 352760), (178, 176380), (356, 88190), (445, 70552), (712, 44095), (890, 35276), (1780, 17638), (3560, 8819)]