20478353

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4651}}^1$

素因数の和:4712

約数の個数: 16

約数和(自身を含む): 25455744

約数和(自身を除く): 4977391

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4651, 32557, 79067, 172087, 553469, 1204609, 2925479, 20478353]

約数ペア:

[(1, 20478353), (7, 2925479), (17, 1204609), (37, 553469), (119, 172087), (259, 79067), (629, 32557), (4403, 4651)]