20657481

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{12919}}^1$

素因数の和:12976

約数の個数: 16

約数和(自身を含む): 30387840

約数和(自身を除く): 9730359

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 12919, 38757, 167947, 503841, 529679, 1589037, 6885827, 20657481]

約数ペア:

[(1, 20657481), (3, 6885827), (13, 1589037), (39, 529679), (41, 503841), (123, 167947), (533, 38757), (1599, 12919)]