20966547

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{523}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 33804288

約数和(自身を除く): 12837741

約数列:

[1, 3, 7, 21, 23, 69, 83, 161, 249, 483, 523, 581, 1569, 1743, 1909, 3661, 5727, 10983, 12029, 13363, 36087, 40089, 43409, 84203, 130227, 252609, 303863, 911589, 998407, 2995221, 6988849, 20966547]

約数ペア:

[(1, 20966547), (3, 6988849), (7, 2995221), (21, 998407), (23, 911589), (69, 303863), (83, 252609), (161, 130227), (249, 84203), (483, 43409), (523, 40089), (581, 36087), (1569, 13363), (1743, 12029), (1909, 10983), (3661, 5727)]