19217680

素因数分解:

$2^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{1049}}^1$

素因数の和:1291

約数の個数: 40

約数和(自身を含む): 44919000

約数和(自身を除く): 25701320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229, 458, 916, 1049, 1145, 1832, 2098, 2290, 3664, 4196, 4580, 5245, 8392, 9160, 10490, 16784, 18320, 20980, 41960, 83920, 240221, 480442, 960884, 1201105, 1921768, 2402210, 3843536, 4804420, 9608840, 19217680]

約数ペア:

[(1, 19217680), (2, 9608840), (4, 4804420), (5, 3843536), (8, 2402210), (10, 1921768), (16, 1201105), (20, 960884), (40, 480442), (80, 240221), (229, 83920), (458, 41960), (916, 20980), (1049, 18320), (1145, 16784), (1832, 10490), (2098, 9160), (2290, 8392), (3664, 5245), (4196, 4580)]