20505495

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{3917}}^1$

素因数の和:4274

約数の個数: 16

約数和(自身を含む): 32911200

約数和(自身を除く): 12405705

約数列:

[1, 3, 5, 15, 349, 1047, 1745, 3917, 5235, 11751, 19585, 58755, 1367033, 4101099, 6835165, 20505495]

約数ペア:

[(1, 20505495), (3, 6835165), (5, 4101099), (15, 1367033), (349, 58755), (1047, 19585), (1745, 11751), (3917, 5235)]