21628216

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1459}}^1$

素因数の和:1591

約数の個数: 32

約数和(自身を含む): 43362000

約数和(自身を除く): 21733784

約数列:

[1, 2, 4, 8, 17, 34, 68, 109, 136, 218, 436, 872, 1459, 1853, 2918, 3706, 5836, 7412, 11672, 14824, 24803, 49606, 99212, 159031, 198424, 318062, 636124, 1272248, 2703527, 5407054, 10814108, 21628216]

約数ペア:

[(1, 21628216), (2, 10814108), (4, 5407054), (8, 2703527), (17, 1272248), (34, 636124), (68, 318062), (109, 198424), (136, 159031), (218, 99212), (436, 49606), (872, 24803), (1459, 14824), (1853, 11672), (2918, 7412), (3706, 5836)]