21775430

素因数分解:

$2^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{5197}}^1$

素因数の和:5623

約数の個数: 16

約数和(自身を含む): 39296880

約数和(自身を除く): 17521450

約数列:

[1, 2, 5, 10, 419, 838, 2095, 4190, 5197, 10394, 25985, 51970, 2177543, 4355086, 10887715, 21775430]

約数ペア:

[(1, 21775430), (2, 10887715), (5, 4355086), (10, 2177543), (419, 51970), (838, 25985), (2095, 10394), (4190, 5197)]