2121018320

素因数分解:

$2^4\times 5^1\times {\mathrm{26512729}}^1$

素因数の和:26512742

約数の個数: 20

約数和(自身を含む): 4931367780

約数和(自身を除く): 2810349460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 26512729, 53025458, 106050916, 132563645, 212101832, 265127290, 424203664, 530254580, 1060509160, 2121018320]

約数ペア:

[(1, 2121018320), (2, 1060509160), (4, 530254580), (5, 424203664), (8, 265127290), (10, 212101832), (16, 132563645), (20, 106050916), (40, 53025458), (80, 26512729)]