21100779

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4999}}^1$

素因数の和:5079

約数の個数: 24

約数和(自身を含む): 35360000

約数和(自身を除く): 14259221

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 4999, 14997, 34993, 44991, 104979, 314937, 334933, 1004799, 2344531, 3014397, 7033593, 21100779]

約数ペア:

[(1, 21100779), (3, 7033593), (7, 3014397), (9, 2344531), (21, 1004799), (63, 334933), (67, 314937), (201, 104979), (469, 44991), (603, 34993), (1407, 14997), (4221, 4999)]