21915855

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37463}}^1$

素因数の和:37487

約数の個数: 24

約数和(自身を含む): 40910688

約数和(自身を除く): 18994833

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 37463, 112389, 187315, 337167, 487019, 561945, 1461057, 1685835, 2435095, 4383171, 7305285, 21915855]

約数ペア:

[(1, 21915855), (3, 7305285), (5, 4383171), (9, 2435095), (13, 1685835), (15, 1461057), (39, 561945), (45, 487019), (65, 337167), (117, 187315), (195, 112389), (585, 37463)]