21540525

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{5419}}^1$

素因数の和:5485

約数の個数: 24

約数和(自身を含む): 36292320

約数和(自身を除く): 14751795

約数列:

[1, 3, 5, 15, 25, 53, 75, 159, 265, 795, 1325, 3975, 5419, 16257, 27095, 81285, 135475, 287207, 406425, 861621, 1436035, 4308105, 7180175, 21540525]

約数ペア:

[(1, 21540525), (3, 7180175), (5, 4308105), (15, 1436035), (25, 861621), (53, 406425), (75, 287207), (159, 135475), (265, 81285), (795, 27095), (1325, 16257), (3975, 5419)]