21078938

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{1499}}^1$

素因数の和:1669

約数の個数: 16

約数和(自身を含む): 32400000

約数和(自身を除く): 11321062

約数列:

[1, 2, 79, 89, 158, 178, 1499, 2998, 7031, 14062, 118421, 133411, 236842, 266822, 10539469, 21078938]

約数ペア:

[(1, 21078938), (2, 10539469), (79, 266822), (89, 236842), (158, 133411), (178, 118421), (1499, 14062), (2998, 7031)]