389660785

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 490291200

約数和(自身を除く): 100630415

約数列:

[1, 5, 47, 79, 139, 151, 235, 395, 695, 755, 3713, 6533, 7097, 10981, 11929, 18565, 20989, 32665, 35485, 54905, 59645, 104945, 516107, 560663, 986483, 1658131, 2580535, 2803315, 4932415, 8290655, 77932157, 389660785]

約数ペア:

[(1, 389660785), (5, 77932157), (47, 8290655), (79, 4932415), (139, 2803315), (151, 2580535), (235, 1658131), (395, 986483), (695, 560663), (755, 516107), (3713, 104945), (6533, 59645), (7097, 54905), (10981, 35485), (11929, 32665), (18565, 20989)]