21170775

素因数分解:

$3^1\times 5^2\times {\mathrm{439}}^1\times {\mathrm{643}}^1$

素因数の和:1095

約数の個数: 24

約数和(自身を含む): 35136640

約数和(自身を除く): 13965865

約数列:

[1, 3, 5, 15, 25, 75, 439, 643, 1317, 1929, 2195, 3215, 6585, 9645, 10975, 16075, 32925, 48225, 282277, 846831, 1411385, 4234155, 7056925, 21170775]

約数ペア:

[(1, 21170775), (3, 7056925), (5, 4234155), (15, 1411385), (25, 846831), (75, 282277), (439, 48225), (643, 32925), (1317, 16075), (1929, 10975), (2195, 9645), (3215, 6585)]