20008720

素因数分解:

$2^4\times 5^1\times {\mathrm{250109}}^1$

素因数の和:250122

約数の個数: 20

約数和(自身を含む): 46520460

約数和(自身を除く): 26511740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250109, 500218, 1000436, 1250545, 2000872, 2501090, 4001744, 5002180, 10004360, 20008720]

約数ペア:

[(1, 20008720), (2, 10004360), (4, 5002180), (5, 4001744), (8, 2501090), (10, 2000872), (16, 1250545), (20, 1000436), (40, 500218), (80, 250109)]