1778320

素因数分解:

$2^4\times 5^1\times {\mathrm{22229}}^1$

素因数の和:22242

約数の個数: 20

約数和(自身を含む): 4134780

約数和(自身を除く): 2356460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 22229, 44458, 88916, 111145, 177832, 222290, 355664, 444580, 889160, 1778320]

約数ペア:

[(1, 1778320), (2, 889160), (4, 444580), (5, 355664), (8, 222290), (10, 177832), (16, 111145), (20, 88916), (40, 44458), (80, 22229)]