217191920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{246809}}^1$

素因数の和:246833

約数の個数: 40

約数和(自身を含む): 550879920

約数和(自身を除く): 333688000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 246809, 493618, 987236, 1234045, 1974472, 2468090, 2714899, 3948944, 4936180, 5429798, 9872360, 10859596, 13574495, 19744720, 21719192, 27148990, 43438384, 54297980, 108595960, 217191920]

約数ペア:

[(1, 217191920), (2, 108595960), (4, 54297980), (5, 43438384), (8, 27148990), (10, 21719192), (11, 19744720), (16, 13574495), (20, 10859596), (22, 9872360), (40, 5429798), (44, 4936180), (55, 3948944), (80, 2714899), (88, 2468090), (110, 1974472), (176, 1234045), (220, 987236), (440, 493618), (880, 246809)]