21605489

素因数分解:

${\mathrm{19}}^2\times {\mathrm{97}}^1\times {\mathrm{617}}^1$

素因数の和:752

約数の個数: 12

約数和(自身を含む): 23074884

約数和(自身を除く): 1469395

約数列:

[1, 19, 97, 361, 617, 1843, 11723, 35017, 59849, 222737, 1137131, 21605489]

約数ペア:

[(1, 21605489), (19, 1137131), (97, 222737), (361, 59849), (617, 35017), (1843, 11723)]