21861020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57529}}^1$

素因数の和:57557

約数の個数: 24

約数和(自身を含む): 48325200

約数和(自身を除く): 26464180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57529, 115058, 230116, 287645, 575290, 1093051, 1150580, 2186102, 4372204, 5465255, 10930510, 21861020]

約数ペア:

[(1, 21861020), (2, 10930510), (4, 5465255), (5, 4372204), (10, 2186102), (19, 1150580), (20, 1093051), (38, 575290), (76, 287645), (95, 230116), (190, 115058), (380, 57529)]