20894450

素因数分解:

$2^1\times 5^2\times {\mathrm{509}}^1\times {\mathrm{821}}^1$

素因数の和:1342

約数の個数: 24

約数和(自身を含む): 38987460

約数和(自身を除く): 18093010

約数列:

[1, 2, 5, 10, 25, 50, 509, 821, 1018, 1642, 2545, 4105, 5090, 8210, 12725, 20525, 25450, 41050, 417889, 835778, 2089445, 4178890, 10447225, 20894450]

約数ペア:

[(1, 20894450), (2, 10447225), (5, 4178890), (10, 2089445), (25, 835778), (50, 417889), (509, 41050), (821, 25450), (1018, 20525), (1642, 12725), (2545, 8210), (4105, 5090)]