21358143

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{241}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 31837520

約数和(自身を除く): 10479377

約数列:

[1, 3, 9, 43, 129, 229, 241, 387, 687, 723, 2061, 2169, 9847, 10363, 29541, 31089, 55189, 88623, 93267, 165567, 496701, 2373127, 7119381, 21358143]

約数ペア:

[(1, 21358143), (3, 7119381), (9, 2373127), (43, 496701), (129, 165567), (229, 93267), (241, 88623), (387, 55189), (687, 31089), (723, 29541), (2061, 10363), (2169, 9847)]