20891143

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{2273}}^1$

素因数の和:2394

約数の個数: 16

約数和(自身を含む): 25978176

約数和(自身を除く): 5087033

約数列:

[1, 7, 13, 91, 101, 707, 1313, 2273, 9191, 15911, 29549, 206843, 229573, 1607011, 2984449, 20891143]

約数ペア:

[(1, 20891143), (7, 2984449), (13, 1607011), (91, 229573), (101, 206843), (707, 29549), (1313, 15911), (2273, 9191)]