18899980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{85909}}^1$

素因数の和:85929

約数の個数: 24

約数和(自身を含む): 43298640

約数和(自身を除く): 24398660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 85909, 171818, 343636, 429545, 859090, 944999, 1718180, 1889998, 3779996, 4724995, 9449990, 18899980]

約数ペア:

[(1, 18899980), (2, 9449990), (4, 4724995), (5, 3779996), (10, 1889998), (11, 1718180), (20, 944999), (22, 859090), (44, 429545), (55, 343636), (110, 171818), (220, 85909)]