20258320

素因数分解:

$2^4\times 5^1\times {\mathrm{253229}}^1$

素因数の和:253242

約数の個数: 20

約数和(自身を含む): 47100780

約数和(自身を除く): 26842460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253229, 506458, 1012916, 1266145, 2025832, 2532290, 4051664, 5064580, 10129160, 20258320]

約数ペア:

[(1, 20258320), (2, 10129160), (4, 5064580), (5, 4051664), (8, 2532290), (10, 2025832), (16, 1266145), (20, 1012916), (40, 506458), (80, 253229)]