28789891

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:223

約数の個数: 24

約数和(自身を含む): 33696320

約数和(自身を除く): 4906429

約数列:

[1, 13, 17, 79, 97, 221, 289, 1027, 1261, 1343, 1649, 3757, 7663, 17459, 21437, 22831, 28033, 99619, 130271, 296803, 364429, 1693523, 2214607, 28789891]

約数ペア:

[(1, 28789891), (13, 2214607), (17, 1693523), (79, 364429), (97, 296803), (221, 130271), (289, 99619), (1027, 28033), (1261, 22831), (1343, 21437), (1649, 17459), (3757, 7663)]