21557488

素因数分解:

$2^4\times {\mathrm{103}}^2\times {\mathrm{127}}^1$

素因数の和:341

約数の個数: 30

約数和(自身を含む): 42509184

約数和(自身を除く): 20951696

約数列:

[1, 2, 4, 8, 16, 103, 127, 206, 254, 412, 508, 824, 1016, 1648, 2032, 10609, 13081, 21218, 26162, 42436, 52324, 84872, 104648, 169744, 209296, 1347343, 2694686, 5389372, 10778744, 21557488]

約数ペア:

[(1, 21557488), (2, 10778744), (4, 5389372), (8, 2694686), (16, 1347343), (103, 209296), (127, 169744), (206, 104648), (254, 84872), (412, 52324), (508, 42436), (824, 26162), (1016, 21218), (1648, 13081), (2032, 10609)]