21115805

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{2309}}^1$

素因数の和:2404

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 5495395

約数列:

[1, 5, 31, 59, 155, 295, 1829, 2309, 9145, 11545, 71579, 136231, 357895, 681155, 4223161, 21115805]

約数ペア:

[(1, 21115805), (5, 4223161), (31, 681155), (59, 357895), (155, 136231), (295, 71579), (1829, 11545), (2309, 9145)]