20202721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4447}}^1$

素因数の和:4524

約数の個数: 16

約数和(自身を含む): 25620480

約数和(自身を除く): 5417759

約数列:

[1, 7, 11, 59, 77, 413, 649, 4447, 4543, 31129, 48917, 262373, 342419, 1836611, 2886103, 20202721]

約数ペア:

[(1, 20202721), (7, 2886103), (11, 1836611), (59, 342419), (77, 262373), (413, 48917), (649, 31129), (4447, 4543)]