21893493

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 32034816

約数和(自身を除く): 10141323

約数列:

[1, 3, 23, 43, 47, 69, 129, 141, 157, 471, 989, 1081, 2021, 2967, 3243, 3611, 6063, 6751, 7379, 10833, 20253, 22137, 46483, 139449, 155273, 169717, 317297, 465819, 509151, 951891, 7297831, 21893493]

約数ペア:

[(1, 21893493), (3, 7297831), (23, 951891), (43, 509151), (47, 465819), (69, 317297), (129, 169717), (141, 155273), (157, 139449), (471, 46483), (989, 22137), (1081, 20253), (2021, 10833), (2967, 7379), (3243, 6751), (3611, 6063)]