21808465

素因数分解:

$5^1\times 7^1\times {\mathrm{59}}^2\times {\mathrm{179}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 30594240

約数和(自身を除く): 8785775

約数列:

[1, 5, 7, 35, 59, 179, 295, 413, 895, 1253, 2065, 3481, 6265, 10561, 17405, 24367, 52805, 73927, 121835, 369635, 623099, 3115495, 4361693, 21808465]

約数ペア:

[(1, 21808465), (5, 4361693), (7, 3115495), (35, 623099), (59, 369635), (179, 121835), (295, 73927), (413, 52805), (895, 24367), (1253, 17405), (2065, 10561), (3481, 6265)]