20943765

素因数分解:

$3^4\times 5^1\times {\mathrm{51713}}^1$

素因数の和:51730

約数の個数: 20

約数和(自身を含む): 37544364

約数和(自身を除く): 16600599

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51713, 155139, 258565, 465417, 775695, 1396251, 2327085, 4188753, 6981255, 20943765]

約数ペア:

[(1, 20943765), (3, 6981255), (5, 4188753), (9, 2327085), (15, 1396251), (27, 775695), (45, 465417), (81, 258565), (135, 155139), (405, 51713)]