21162407

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1\times {\mathrm{421}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 24955392

約数和(自身を除く): 3792985

約数列:

[1, 7, 43, 167, 301, 421, 1169, 2947, 7181, 18103, 50267, 70307, 126721, 492149, 3023201, 21162407]

約数ペア:

[(1, 21162407), (7, 3023201), (43, 492149), (167, 126721), (301, 70307), (421, 50267), (1169, 18103), (2947, 7181)]