18991430

素因数分解:

$2^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{17749}}^1$

素因数の和:17863

約数の個数: 16

約数和(自身を含む): 34506000

約数和(自身を除く): 15514570

約数列:

[1, 2, 5, 10, 107, 214, 535, 1070, 17749, 35498, 88745, 177490, 1899143, 3798286, 9495715, 18991430]

約数ペア:

[(1, 18991430), (2, 9495715), (5, 3798286), (10, 1899143), (107, 177490), (214, 88745), (535, 35498), (1070, 17749)]