21302685

素因数分解:

$3^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1709}}^1$

素因数の和:1997

約数の個数: 24

約数和(自身を含む): 37079640

約数和(自身を除く): 15776955

約数列:

[1, 3, 5, 9, 15, 45, 277, 831, 1385, 1709, 2493, 4155, 5127, 8545, 12465, 15381, 25635, 76905, 473393, 1420179, 2366965, 4260537, 7100895, 21302685]

約数ペア:

[(1, 21302685), (3, 7100895), (5, 4260537), (9, 2366965), (15, 1420179), (45, 473393), (277, 76905), (831, 25635), (1385, 15381), (1709, 12465), (2493, 8545), (4155, 5127)]