21200560

素因数分解:

$2^4\times 5^1\times {\mathrm{265007}}^1$

素因数の和:265020

約数の個数: 20

約数和(自身を含む): 49291488

約数和(自身を除く): 28090928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 265007, 530014, 1060028, 1325035, 2120056, 2650070, 4240112, 5300140, 10600280, 21200560]

約数ペア:

[(1, 21200560), (2, 10600280), (4, 5300140), (5, 4240112), (8, 2650070), (10, 2120056), (16, 1325035), (20, 1060028), (40, 530014), (80, 265007)]