20686315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 28377216

約数和(自身を除く): 7690901

約数列:

[1, 5, 13, 23, 65, 101, 115, 137, 299, 505, 685, 1313, 1495, 1781, 2323, 3151, 6565, 8905, 11615, 13837, 15755, 30199, 40963, 69185, 150995, 179881, 204815, 318251, 899405, 1591255, 4137263, 20686315]

約数ペア:

[(1, 20686315), (5, 4137263), (13, 1591255), (23, 899405), (65, 318251), (101, 204815), (115, 179881), (137, 150995), (299, 69185), (505, 40963), (685, 30199), (1313, 15755), (1495, 13837), (1781, 11615), (2323, 8905), (3151, 6565)]