20215715

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16369}}^1$

素因数の和:16406

約数の個数: 16

約数和(自身を含む): 27501600

約数和(自身を除く): 7285885

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 16369, 81845, 212797, 311011, 1063985, 1555055, 4043143, 20215715]

約数ペア:

[(1, 20215715), (5, 4043143), (13, 1555055), (19, 1063985), (65, 311011), (95, 212797), (247, 81845), (1235, 16369)]