21309753

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{6571}}^1$

素因数の和:6644

約数の個数: 16

約数和(自身を含む): 30283776

約数和(自身を除く): 8974023

約数列:

[1, 3, 23, 47, 69, 141, 1081, 3243, 6571, 19713, 151133, 308837, 453399, 926511, 7103251, 21309753]

約数ペア:

[(1, 21309753), (3, 7103251), (23, 926511), (47, 453399), (69, 308837), (141, 151133), (1081, 19713), (3243, 6571)]