28139307

素因数分解:

$3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{13267}}^1$

素因数の和:13378

約数の個数: 16

約数和(自身を含む): 43306752

約数和(自身を除く): 15167445

約数列:

[1, 3, 7, 21, 101, 303, 707, 2121, 13267, 39801, 92869, 278607, 1339967, 4019901, 9379769, 28139307]

約数ペア:

[(1, 28139307), (3, 9379769), (7, 4019901), (21, 1339967), (101, 278607), (303, 92869), (707, 39801), (2121, 13267)]