21167181

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4253}}^1$

素因数の和:4345

約数の個数: 24

約数和(自身を含む): 35393280

約数和(自身を除く): 14226099

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4253, 4977, 12759, 29771, 38277, 89313, 267939, 335987, 1007961, 2351909, 3023883, 7055727, 21167181]

約数ペア:

[(1, 21167181), (3, 7055727), (7, 3023883), (9, 2351909), (21, 1007961), (63, 335987), (79, 267939), (237, 89313), (553, 38277), (711, 29771), (1659, 12759), (4253, 4977)]