211931721

素因数分解:

$3^5\times {\mathrm{719}}^1\times {\mathrm{1213}}^1$

素因数の和:1947

約数の個数: 24

約数和(自身を含む): 318165120

約数和(自身を除く): 106233399

約数列:

[1, 3, 9, 27, 81, 243, 719, 1213, 2157, 3639, 6471, 10917, 19413, 32751, 58239, 98253, 174717, 294759, 872147, 2616441, 7849323, 23547969, 70643907, 211931721]

約数ペア:

[(1, 211931721), (3, 70643907), (9, 23547969), (27, 7849323), (81, 2616441), (243, 872147), (719, 294759), (1213, 174717), (2157, 98253), (3639, 58239), (6471, 32751), (10917, 19413)]