21283073

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{811}}^1$

素因数の和:1004

約数の個数: 16

約数和(自身を含む): 25568256

約数和(自身を除く): 4285183

約数列:

[1, 7, 23, 161, 163, 811, 1141, 3749, 5677, 18653, 26243, 130571, 132193, 925351, 3040439, 21283073]

約数ペア:

[(1, 21283073), (7, 3040439), (23, 925351), (161, 132193), (163, 130571), (811, 26243), (1141, 18653), (3749, 5677)]