28163421

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 48572160

約数和(自身を除く): 20408739

約数列:

[1, 3, 9, 11, 13, 33, 39, 79, 99, 117, 143, 237, 277, 429, 711, 831, 869, 1027, 1287, 2493, 2607, 3047, 3081, 3601, 7821, 9141, 9243, 10803, 11297, 21883, 27423, 32409, 33891, 39611, 65649, 101673, 118833, 196947, 240713, 284479, 356499, 722139, 853437, 2166417, 2560311, 3129269, 9387807, 28163421]

約数ペア:

[(1, 28163421), (3, 9387807), (9, 3129269), (11, 2560311), (13, 2166417), (33, 853437), (39, 722139), (79, 356499), (99, 284479), (117, 240713), (143, 196947), (237, 118833), (277, 101673), (429, 65649), (711, 39611), (831, 33891), (869, 32409), (1027, 27423), (1287, 21883), (2493, 11297), (2607, 10803), (3047, 9243), (3081, 9141), (3601, 7821)]