21205655

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{1901}}^1$

素因数の和:2026

約数の個数: 16

約数和(自身を含む): 26841024

約数和(自身を除く): 5635369

約数列:

[1, 5, 23, 97, 115, 485, 1901, 2231, 9505, 11155, 43723, 184397, 218615, 921985, 4241131, 21205655]

約数ペア:

[(1, 21205655), (5, 4241131), (23, 921985), (97, 218615), (115, 184397), (485, 43723), (1901, 11155), (2231, 9505)]