21000901341

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1523}}^1\times {\mathrm{28549}}^1$

素因数の和:30105

約数の個数: 32

約数和(自身を含む): 33415833600

約数和(自身を除く): 12414932259

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 1523, 4569, 10661, 28549, 31983, 35029, 85647, 105087, 199843, 245203, 599529, 656627, 735609, 1969881, 4596389, 13789167, 43480127, 130440381, 304360889, 913082667, 1000042921, 3000128763, 7000300447, 21000901341]

約数ペア:

[(1, 21000901341), (3, 7000300447), (7, 3000128763), (21, 1000042921), (23, 913082667), (69, 304360889), (161, 130440381), (483, 43480127), (1523, 13789167), (4569, 4596389), (10661, 1969881), (28549, 735609), (31983, 656627), (35029, 599529), (85647, 245203), (105087, 199843)]