21850480

素因数分解:

$2^4\times 5^1\times {\mathrm{273131}}^1$

素因数の和:273144

約数の個数: 20

約数和(自身を含む): 50802552

約数和(自身を除く): 28952072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273131, 546262, 1092524, 1365655, 2185048, 2731310, 4370096, 5462620, 10925240, 21850480]

約数ペア:

[(1, 21850480), (2, 10925240), (4, 5462620), (5, 4370096), (8, 2731310), (10, 2185048), (16, 1365655), (20, 1092524), (40, 546262), (80, 273131)]