20561205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{3319}}^1$

素因数の和:3393

約数の個数: 32

約数和(自身を含む): 38246400

約数和(自身を除く): 17685195

約数列:

[1, 3, 5, 7, 15, 21, 35, 59, 105, 177, 295, 413, 885, 1239, 2065, 3319, 6195, 9957, 16595, 23233, 49785, 69699, 116165, 195821, 348495, 587463, 979105, 1370747, 2937315, 4112241, 6853735, 20561205]

約数ペア:

[(1, 20561205), (3, 6853735), (5, 4112241), (7, 2937315), (15, 1370747), (21, 979105), (35, 587463), (59, 348495), (105, 195821), (177, 116165), (295, 69699), (413, 49785), (885, 23233), (1239, 16595), (2065, 9957), (3319, 6195)]