21810896

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5431}}^1$

素因数の和:5690

約数の個数: 20

約数和(自身を含む): 42434784

約数和(自身を除く): 20623888

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5431, 10862, 21724, 43448, 86896, 1363181, 2726362, 5452724, 10905448, 21810896]

約数ペア:

[(1, 21810896), (2, 10905448), (4, 5452724), (8, 2726362), (16, 1363181), (251, 86896), (502, 43448), (1004, 21724), (2008, 10862), (4016, 5431)]