21585291

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4651}}^1$

素因数の和:4691

約数の個数: 32

約数和(自身を含む): 37513728

約数和(自身を除く): 15928437

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4641, 4651, 13953, 32557, 60463, 79067, 97671, 181389, 237201, 423241, 553469, 1027871, 1269723, 1660407, 3083613, 7195097, 21585291]

約数ペア:

[(1, 21585291), (3, 7195097), (7, 3083613), (13, 1660407), (17, 1269723), (21, 1027871), (39, 553469), (51, 423241), (91, 237201), (119, 181389), (221, 97671), (273, 79067), (357, 60463), (663, 32557), (1547, 13953), (4641, 4651)]