397393060

素因数分解:

$2^2\times 5^1\times {\mathrm{1787}}^1\times {\mathrm{11119}}^1$

素因数の和:12915

約数の個数: 24

約数和(自身を含む): 835067520

約数和(自身を除く): 437674460

約数列:

[1, 2, 4, 5, 10, 20, 1787, 3574, 7148, 8935, 11119, 17870, 22238, 35740, 44476, 55595, 111190, 222380, 19869653, 39739306, 79478612, 99348265, 198696530, 397393060]

約数ペア:

[(1, 397393060), (2, 198696530), (4, 99348265), (5, 79478612), (10, 39739306), (20, 19869653), (1787, 222380), (3574, 111190), (7148, 55595), (8935, 44476), (11119, 35740), (17870, 22238)]