31281580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{142189}}^1$

素因数の和:142209

約数の個数: 24

約数和(自身を含む): 71663760

約数和(自身を除く): 40382180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 142189, 284378, 568756, 710945, 1421890, 1564079, 2843780, 3128158, 6256316, 7820395, 15640790, 31281580]

約数ペア:

[(1, 31281580), (2, 15640790), (4, 7820395), (5, 6256316), (10, 3128158), (11, 2843780), (20, 1564079), (22, 1421890), (44, 710945), (55, 568756), (110, 284378), (220, 142189)]