20406885

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1013}}^1$

素因数の和:1117

約数の個数: 32

約数和(自身を含む): 35043840

約数和(自身を除く): 14636955

約数列:

[1, 3, 5, 15, 17, 51, 79, 85, 237, 255, 395, 1013, 1185, 1343, 3039, 4029, 5065, 6715, 15195, 17221, 20145, 51663, 80027, 86105, 240081, 258315, 400135, 1200405, 1360459, 4081377, 6802295, 20406885]

約数ペア:

[(1, 20406885), (3, 6802295), (5, 4081377), (15, 1360459), (17, 1200405), (51, 400135), (79, 258315), (85, 240081), (237, 86105), (255, 80027), (395, 51663), (1013, 20145), (1185, 17221), (1343, 15195), (3039, 6715), (4029, 5065)]