21108123

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{359}}^1$

素因数の和:551

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 10341477

約数列:

[1, 3, 9, 47, 139, 141, 359, 417, 423, 1077, 1251, 3231, 6533, 16873, 19599, 49901, 50619, 58797, 149703, 151857, 449109, 2345347, 7036041, 21108123]

約数ペア:

[(1, 21108123), (3, 7036041), (9, 2345347), (47, 449109), (139, 151857), (141, 149703), (359, 58797), (417, 50619), (423, 49901), (1077, 19599), (1251, 16873), (3231, 6533)]