20515965

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{3919}}^1$

素因数の和:4276

約数の個数: 16

約数和(自身を含む): 32928000

約数和(自身を除く): 12412035

約数列:

[1, 3, 5, 15, 349, 1047, 1745, 3919, 5235, 11757, 19595, 58785, 1367731, 4103193, 6838655, 20515965]

約数ペア:

[(1, 20515965), (3, 6838655), (5, 4103193), (15, 1367731), (349, 58785), (1047, 19595), (1745, 11757), (3919, 5235)]