20505261

素因数分解:

$3^1\times 7^1\times {\mathrm{523}}^1\times {\mathrm{1867}}^1$

素因数の和:2400

約数の個数: 16

約数和(自身を含む): 31322624

約数和(自身を除く): 10817363

約数列:

[1, 3, 7, 21, 523, 1569, 1867, 3661, 5601, 10983, 13069, 39207, 976441, 2929323, 6835087, 20505261]

約数ペア:

[(1, 20505261), (3, 6835087), (7, 2929323), (21, 976441), (523, 39207), (1569, 13069), (1867, 10983), (3661, 5601)]