20521735

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1321}}^1$

素因数の和:1578

約数の個数: 16

約数和(自身を含む): 26651520

約数和(自身を除く): 6129785

約数列:

[1, 5, 13, 65, 239, 1195, 1321, 3107, 6605, 15535, 17173, 85865, 315719, 1578595, 4104347, 20521735]

約数ペア:

[(1, 20521735), (5, 4104347), (13, 1578595), (65, 315719), (239, 85865), (1195, 17173), (1321, 15535), (3107, 6605)]