21218610

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1279}}^1$

素因数の和:1375

約数の個数: 64

約数和(自身を含む): 58982400

約数和(自身を除く): 37763790

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 79, 105, 158, 210, 237, 395, 474, 553, 790, 1106, 1185, 1279, 1659, 2370, 2558, 2765, 3318, 3837, 5530, 6395, 7674, 8295, 8953, 12790, 16590, 17906, 19185, 26859, 38370, 44765, 53718, 89530, 101041, 134295, 202082, 268590, 303123, 505205, 606246, 707287, 1010410, 1414574, 1515615, 2121861, 3031230, 3536435, 4243722, 7072870, 10609305, 21218610]

約数ペア:

[(1, 21218610), (2, 10609305), (3, 7072870), (5, 4243722), (6, 3536435), (7, 3031230), (10, 2121861), (14, 1515615), (15, 1414574), (21, 1010410), (30, 707287), (35, 606246), (42, 505205), (70, 303123), (79, 268590), (105, 202082), (158, 134295), (210, 101041), (237, 89530), (395, 53718), (474, 44765), (553, 38370), (790, 26859), (1106, 19185), (1185, 17906), (1279, 16590), (1659, 12790), (2370, 8953), (2558, 8295), (2765, 7674), (3318, 6395), (3837, 5530)]