21236995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19219}}^1$

素因数の和:19254

約数の個数: 16

約数和(自身を含む): 29060640

約数和(自身を除く): 7823645

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 19219, 96095, 249847, 326723, 1249235, 1633615, 4247399, 21236995]

約数ペア:

[(1, 21236995), (5, 4247399), (13, 1633615), (17, 1249235), (65, 326723), (85, 249847), (221, 96095), (1105, 19219)]