20218289

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5419}}^1$

素因数の和:5480

約数の個数: 16

約数和(自身を含む): 25495680

約数和(自身を除く): 5277391

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5419, 37933, 70447, 222179, 493129, 1555253, 2888327, 20218289]

約数ペア:

[(1, 20218289), (7, 2888327), (13, 1555253), (41, 493129), (91, 222179), (287, 70447), (533, 37933), (3731, 5419)]