25778320

素因数分解:

$2^4\times 5^1\times {\mathrm{322229}}^1$

素因数の和:322242

約数の個数: 20

約数和(自身を含む): 59934780

約数和(自身を除く): 34156460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 322229, 644458, 1288916, 1611145, 2577832, 3222290, 5155664, 6444580, 12889160, 25778320]

約数ペア:

[(1, 25778320), (2, 12889160), (4, 6444580), (5, 5155664), (8, 3222290), (10, 2577832), (16, 1611145), (20, 1288916), (40, 644458), (80, 322229)]