21363237

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:203

約数の個数: 64

約数和(自身を含む): 39283200

約数和(自身を除く): 17919963

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 61, 63, 109, 119, 153, 183, 189, 327, 357, 427, 459, 549, 763, 981, 1037, 1071, 1281, 1647, 1853, 2289, 2943, 3111, 3213, 3843, 5559, 6649, 6867, 7259, 9333, 11529, 12971, 16677, 19947, 20601, 21777, 27999, 38913, 46543, 50031, 59841, 65331, 113033, 116739, 139629, 179523, 195993, 339099, 350217, 418887, 791231, 1017297, 1256661, 2373693, 3051891, 7121079, 21363237]

約数ペア:

[(1, 21363237), (3, 7121079), (7, 3051891), (9, 2373693), (17, 1256661), (21, 1017297), (27, 791231), (51, 418887), (61, 350217), (63, 339099), (109, 195993), (119, 179523), (153, 139629), (183, 116739), (189, 113033), (327, 65331), (357, 59841), (427, 50031), (459, 46543), (549, 38913), (763, 27999), (981, 21777), (1037, 20601), (1071, 19947), (1281, 16677), (1647, 12971), (1853, 11529), (2289, 9333), (2943, 7259), (3111, 6867), (3213, 6649), (3843, 5559)]