21662240

素因数分解:

$2^5\times 5^1\times {\mathrm{135389}}^1$

素因数の和:135404

約数の個数: 24

約数和(自身を含む): 51177420

約数和(自身を除く): 29515180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135389, 270778, 541556, 676945, 1083112, 1353890, 2166224, 2707780, 4332448, 5415560, 10831120, 21662240]

約数ペア:

[(1, 21662240), (2, 10831120), (4, 5415560), (5, 4332448), (8, 2707780), (10, 2166224), (16, 1353890), (20, 1083112), (32, 676945), (40, 541556), (80, 270778), (160, 135389)]