21918020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57679}}^1$

素因数の和:57707

約数の個数: 24

約数和(自身を含む): 48451200

約数和(自身を除く): 26533180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57679, 115358, 230716, 288395, 576790, 1095901, 1153580, 2191802, 4383604, 5479505, 10959010, 21918020]

約数ペア:

[(1, 21918020), (2, 10959010), (4, 5479505), (5, 4383604), (10, 2191802), (19, 1153580), (20, 1095901), (38, 576790), (76, 288395), (95, 230716), (190, 115358), (380, 57679)]