18991450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{19991}}^1$

素因数の和:20022

約数の個数: 24

約数和(自身を含む): 37185120

約数和(自身を除く): 18193670

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 475, 950, 19991, 39982, 99955, 199910, 379829, 499775, 759658, 999550, 1899145, 3798290, 9495725, 18991450]

約数ペア:

[(1, 18991450), (2, 9495725), (5, 3798290), (10, 1899145), (19, 999550), (25, 759658), (38, 499775), (50, 379829), (95, 199910), (190, 99955), (475, 39982), (950, 19991)]