21032620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7907}}^1$

素因数の和:7942

約数の個数: 48

約数和(自身を含む): 53141760

約数和(自身を除く): 32109140

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7907, 15814, 31628, 39535, 55349, 79070, 110698, 150233, 158140, 221396, 276745, 300466, 553490, 600932, 751165, 1051631, 1106980, 1502330, 2103262, 3004660, 4206524, 5258155, 10516310, 21032620]

約数ペア:

[(1, 21032620), (2, 10516310), (4, 5258155), (5, 4206524), (7, 3004660), (10, 2103262), (14, 1502330), (19, 1106980), (20, 1051631), (28, 751165), (35, 600932), (38, 553490), (70, 300466), (76, 276745), (95, 221396), (133, 158140), (140, 150233), (190, 110698), (266, 79070), (380, 55349), (532, 39535), (665, 31628), (1330, 15814), (2660, 7907)]