21688860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{361481}}^1$

素因数の和:361493

約数の個数: 24

約数和(自身を含む): 60728976

約数和(自身を除く): 39040116

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 361481, 722962, 1084443, 1445924, 1807405, 2168886, 3614810, 4337772, 5422215, 7229620, 10844430, 21688860]

約数ペア:

[(1, 21688860), (2, 10844430), (3, 7229620), (4, 5422215), (5, 4337772), (6, 3614810), (10, 2168886), (12, 1807405), (15, 1445924), (20, 1084443), (30, 722962), (60, 361481)]