21031080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25037}}^1$

素因数の和:25058

約数の個数: 64

約数和(自身を含む): 72109440

約数和(自身を除く): 51078360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25037, 50074, 75111, 100148, 125185, 150222, 175259, 200296, 250370, 300444, 350518, 375555, 500740, 525777, 600888, 701036, 751110, 876295, 1001480, 1051554, 1402072, 1502220, 1752590, 2103108, 2628885, 3004440, 3505180, 4206216, 5257770, 7010360, 10515540, 21031080]

約数ペア:

[(1, 21031080), (2, 10515540), (3, 7010360), (4, 5257770), (5, 4206216), (6, 3505180), (7, 3004440), (8, 2628885), (10, 2103108), (12, 1752590), (14, 1502220), (15, 1402072), (20, 1051554), (21, 1001480), (24, 876295), (28, 751110), (30, 701036), (35, 600888), (40, 525777), (42, 500740), (56, 375555), (60, 350518), (70, 300444), (84, 250370), (105, 200296), (120, 175259), (140, 150222), (168, 125185), (210, 100148), (280, 75111), (420, 50074), (840, 25037)]