209538320

素因数分解:

$2^4\times 5^1\times {\mathrm{2619229}}^1$

素因数の和:2619242

約数の個数: 20

約数和(自身を含む): 487176780

約数和(自身を除く): 277638460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2619229, 5238458, 10476916, 13096145, 20953832, 26192290, 41907664, 52384580, 104769160, 209538320]

約数ペア:

[(1, 209538320), (2, 104769160), (4, 52384580), (5, 41907664), (8, 26192290), (10, 20953832), (16, 13096145), (20, 10476916), (40, 5238458), (80, 2619229)]