21666687

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 35292672

約数和(自身を除く): 13625985

約数列:

[1, 3, 7, 17, 21, 51, 119, 137, 357, 411, 443, 959, 1329, 2329, 2877, 3101, 6987, 7531, 9303, 16303, 22593, 48909, 52717, 60691, 158151, 182073, 424837, 1031747, 1274511, 3095241, 7222229, 21666687]

約数ペア:

[(1, 21666687), (3, 7222229), (7, 3095241), (17, 1274511), (21, 1031747), (51, 424837), (119, 182073), (137, 158151), (357, 60691), (411, 52717), (443, 48909), (959, 22593), (1329, 16303), (2329, 9303), (2877, 7531), (3101, 6987)]