209890

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:297

約数の個数: 16

約数和(自身を含む): 383040

約数和(自身を除く): 173150

約数列:

[1, 2, 5, 10, 139, 151, 278, 302, 695, 755, 1390, 1510, 20989, 41978, 104945, 209890]

約数ペア:

[(1, 209890), (2, 104945), (5, 41978), (10, 20989), (139, 1510), (151, 1390), (278, 755), (302, 695)]