21031388

素因数分解:

$2^2\times 7^3\times {\mathrm{15329}}^1$

素因数の和:15354

約数の個数: 24

約数和(自身を含む): 42924000

約数和(自身を除く): 21892612

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 15329, 30658, 61316, 107303, 214606, 429212, 751121, 1502242, 3004484, 5257847, 10515694, 21031388]

約数ペア:

[(1, 21031388), (2, 10515694), (4, 5257847), (7, 3004484), (14, 1502242), (28, 751121), (49, 429212), (98, 214606), (196, 107303), (343, 61316), (686, 30658), (1372, 15329)]