21487564

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{13007}}^1$

素因数の和:13077

約数の個数: 24

約数和(自身を含む): 43706880

約数和(自身を除く): 22219316

約数列:

[1, 2, 4, 7, 14, 28, 59, 118, 236, 413, 826, 1652, 13007, 26014, 52028, 91049, 182098, 364196, 767413, 1534826, 3069652, 5371891, 10743782, 21487564]

約数ペア:

[(1, 21487564), (2, 10743782), (4, 5371891), (7, 3069652), (14, 1534826), (28, 767413), (59, 364196), (118, 182098), (236, 91049), (413, 52028), (826, 26014), (1652, 13007)]