21790036

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{286711}}^1$

素因数の和:286734

約数の個数: 12

約数和(自身を含む): 40139680

約数和(自身を除く): 18349644

約数列:

[1, 2, 4, 19, 38, 76, 286711, 573422, 1146844, 5447509, 10895018, 21790036]

約数ペア:

[(1, 21790036), (2, 10895018), (4, 5447509), (19, 1146844), (38, 573422), (76, 286711)]