21413990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12671}}^1$

素因数の和:12704

約数の個数: 24

約数和(自身を含む): 41741568

約数和(自身を除く): 20327578

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12671, 25342, 63355, 126710, 164723, 329446, 823615, 1647230, 2141399, 4282798, 10706995, 21413990]

約数ペア:

[(1, 21413990), (2, 10706995), (5, 4282798), (10, 2141399), (13, 1647230), (26, 823615), (65, 329446), (130, 164723), (169, 126710), (338, 63355), (845, 25342), (1690, 12671)]