21005570

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{641}}^1$

素因数の和:790

約数の個数: 32

約数和(自身を含む): 39521520

約数和(自身を除く): 18515950

約数列:

[1, 2, 5, 10, 29, 58, 113, 145, 226, 290, 565, 641, 1130, 1282, 3205, 3277, 6410, 6554, 16385, 18589, 32770, 37178, 72433, 92945, 144866, 185890, 362165, 724330, 2100557, 4201114, 10502785, 21005570]

約数ペア:

[(1, 21005570), (2, 10502785), (5, 4201114), (10, 2100557), (29, 724330), (58, 362165), (113, 185890), (145, 144866), (226, 92945), (290, 72433), (565, 37178), (641, 32770), (1130, 18589), (1282, 16385), (3205, 6554), (3277, 6410)]