20820687

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{1489}}^1$

素因数の和:1630

約数の個数: 16

約数和(自身を含む): 28608000

約数和(自身を除く): 7787313

約数列:

[1, 3, 59, 79, 177, 237, 1489, 4467, 4661, 13983, 87851, 117631, 263553, 352893, 6940229, 20820687]

約数ペア:

[(1, 20820687), (3, 6940229), (59, 352893), (79, 263553), (177, 117631), (237, 87851), (1489, 13983), (4467, 4661)]