21289868

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{757}}^1$

素因数の和:929

約数の個数: 24

約数和(自身を含む): 38203200

約数和(自身を除く): 16913332

約数列:

[1, 2, 4, 79, 89, 158, 178, 316, 356, 757, 1514, 3028, 7031, 14062, 28124, 59803, 67373, 119606, 134746, 239212, 269492, 5322467, 10644934, 21289868]

約数ペア:

[(1, 21289868), (2, 10644934), (4, 5322467), (79, 269492), (89, 239212), (158, 134746), (178, 119606), (316, 67373), (356, 59803), (757, 28124), (1514, 14062), (3028, 7031)]