21115497

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{4133}}^1$

素因数の和:4280

約数の個数: 16

約数和(自身を含む): 30558528

約数和(自身を除く): 9443031

約数列:

[1, 3, 13, 39, 131, 393, 1703, 4133, 5109, 12399, 53729, 161187, 541423, 1624269, 7038499, 21115497]

約数ペア:

[(1, 21115497), (3, 7038499), (13, 1624269), (39, 541423), (131, 161187), (393, 53729), (1703, 12399), (4133, 5109)]