21999284

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{3109}}^1$

素因数の和:3203

約数の個数: 24

約数和(自身を含む): 40492200

約数和(自身を除く): 18492916

約数列:

[1, 2, 4, 29, 58, 61, 116, 122, 244, 1769, 3109, 3538, 6218, 7076, 12436, 90161, 180322, 189649, 360644, 379298, 758596, 5499821, 10999642, 21999284]

約数ペア:

[(1, 21999284), (2, 10999642), (4, 5499821), (29, 758596), (58, 379298), (61, 360644), (116, 189649), (122, 180322), (244, 90161), (1769, 12436), (3109, 7076), (3538, 6218)]