21905812418

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53955203}}^1$

素因数の和:53955241

約数の個数: 16

約数和(自身を含む): 38847746880

約数和(自身を除く): 16941934462

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 53955203, 107910406, 377686421, 755372842, 1564700887, 3129401774, 10952906209, 21905812418]

約数ペア:

[(1, 21905812418), (2, 10952906209), (7, 3129401774), (14, 1564700887), (29, 755372842), (58, 377686421), (203, 107910406), (406, 53955203)]