64671580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{104309}}^1$

素因数の和:104349

約数の個数: 24

約数和(自身を含む): 140192640

約数和(自身を除く): 75521060

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 104309, 208618, 417236, 521545, 1043090, 2086180, 3233579, 6467158, 12934316, 16167895, 32335790, 64671580]

約数ペア:

[(1, 64671580), (2, 32335790), (4, 16167895), (5, 12934316), (10, 6467158), (20, 3233579), (31, 2086180), (62, 1043090), (124, 521545), (155, 417236), (310, 208618), (620, 104309)]