21188035

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:124

約数の個数: 48

約数和(自身を含む): 31122432

約数和(自身を除く): 9934397

約数列:

[1, 5, 11, 17, 31, 43, 55, 85, 155, 187, 215, 289, 341, 473, 527, 731, 935, 1333, 1445, 1705, 2365, 2635, 3179, 3655, 5797, 6665, 8041, 8959, 12427, 14663, 15895, 22661, 28985, 40205, 44795, 62135, 73315, 98549, 113305, 136697, 249271, 385237, 492745, 683485, 1246355, 1926185, 4237607, 21188035]

約数ペア:

[(1, 21188035), (5, 4237607), (11, 1926185), (17, 1246355), (31, 683485), (43, 492745), (55, 385237), (85, 249271), (155, 136697), (187, 113305), (215, 98549), (289, 73315), (341, 62135), (473, 44795), (527, 40205), (731, 28985), (935, 22661), (1333, 15895), (1445, 14663), (1705, 12427), (2365, 8959), (2635, 8041), (3179, 6665), (3655, 5797)]