21084819

素因数分解:

$3^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{4201}}^1$

素因数の和:4450

約数の個数: 16

約数和(自身を含む): 32271360

約数和(自身を除く): 11186541

約数列:

[1, 3, 7, 21, 239, 717, 1673, 4201, 5019, 12603, 29407, 88221, 1004039, 3012117, 7028273, 21084819]

約数ペア:

[(1, 21084819), (3, 7028273), (7, 3012117), (21, 1004039), (239, 88221), (717, 29407), (1673, 12603), (4201, 5019)]