21085545

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108131}}^1$

素因数の和:108152

約数の個数: 16

約数和(自身を含む): 36332352

約数和(自身を除く): 15246807

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 108131, 324393, 540655, 1405703, 1621965, 4217109, 7028515, 21085545]

約数ペア:

[(1, 21085545), (3, 7028515), (5, 4217109), (13, 1621965), (15, 1405703), (39, 540655), (65, 324393), (195, 108131)]