157640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{563}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 406080

約数和(自身を除く): 248440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 563, 1126, 2252, 2815, 3941, 4504, 5630, 7882, 11260, 15764, 19705, 22520, 31528, 39410, 78820, 157640]

約数ペア:

[(1, 157640), (2, 78820), (4, 39410), (5, 31528), (7, 22520), (8, 19705), (10, 15764), (14, 11260), (20, 7882), (28, 5630), (35, 4504), (40, 3941), (56, 2815), (70, 2252), (140, 1126), (280, 563)]