21506138

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{6359}}^1$

素因数の和:6469

約数の個数: 16

約数和(自身を含む): 34344000

約数和(自身を除く): 12837862

約数列:

[1, 2, 19, 38, 89, 178, 1691, 3382, 6359, 12718, 120821, 241642, 565951, 1131902, 10753069, 21506138]

約数ペア:

[(1, 21506138), (2, 10753069), (19, 1131902), (38, 565951), (89, 241642), (178, 120821), (1691, 12718), (3382, 6359)]