21379740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1021}}^1$

素因数の和:1382

約数の個数: 48

約数和(自身を含む): 60093600

約数和(自身を除く): 38713860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 349, 698, 1021, 1047, 1396, 1745, 2042, 2094, 3063, 3490, 4084, 4188, 5105, 5235, 6126, 6980, 10210, 10470, 12252, 15315, 20420, 20940, 30630, 61260, 356329, 712658, 1068987, 1425316, 1781645, 2137974, 3563290, 4275948, 5344935, 7126580, 10689870, 21379740]

約数ペア:

[(1, 21379740), (2, 10689870), (3, 7126580), (4, 5344935), (5, 4275948), (6, 3563290), (10, 2137974), (12, 1781645), (15, 1425316), (20, 1068987), (30, 712658), (60, 356329), (349, 61260), (698, 30630), (1021, 20940), (1047, 20420), (1396, 15315), (1745, 12252), (2042, 10470), (2094, 10210), (3063, 6980), (3490, 6126), (4084, 5235), (4188, 5105)]