21180723

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{7487}}^1$

素因数の和:7554

約数の個数: 16

約数和(自身を含む): 30191616

約数和(自身を除く): 9010893

約数列:

[1, 3, 23, 41, 69, 123, 943, 2829, 7487, 22461, 172201, 306967, 516603, 920901, 7060241, 21180723]

約数ペア:

[(1, 21180723), (3, 7060241), (23, 920901), (41, 516603), (69, 306967), (123, 172201), (943, 22461), (2829, 7487)]