19977477

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{3739}}^1$

素因数の和:3892

約数の個数: 16

約数和(自身を含む): 28902720

約数和(自身を除く): 8925243

約数列:

[1, 3, 13, 39, 137, 411, 1781, 3739, 5343, 11217, 48607, 145821, 512243, 1536729, 6659159, 19977477]

約数ペア:

[(1, 19977477), (3, 6659159), (13, 1536729), (39, 512243), (137, 145821), (411, 48607), (1781, 11217), (3739, 5343)]