21221533

素因数分解:

${\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:324

約数の個数: 16

約数和(自身を含む): 22752000

約数和(自身を除く): 1530467

約数列:

[1, 29, 59, 79, 157, 1711, 2291, 4553, 4661, 9263, 12403, 135169, 268627, 359687, 731777, 21221533]

約数ペア:

[(1, 21221533), (29, 731777), (59, 359687), (79, 268627), (157, 135169), (1711, 12403), (2291, 9263), (4553, 4661)]