20541716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{12743}}^1$

素因数の和:12791

約数の個数: 24

約数和(自身を含む): 39965184

約数和(自身を除く): 19423468

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 12743, 25486, 50972, 165659, 331318, 395033, 662636, 790066, 1580132, 5135429, 10270858, 20541716]

約数ペア:

[(1, 20541716), (2, 10270858), (4, 5135429), (13, 1580132), (26, 790066), (31, 662636), (52, 395033), (62, 331318), (124, 165659), (403, 50972), (806, 25486), (1612, 12743)]