20767185

素因数分解:

$3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1091}}^1$

素因数の和:1155

約数の個数: 40

約数和(自身を含む): 38054016

約数和(自身を除く): 17286831

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 405, 423, 705, 1091, 1269, 2115, 3273, 3807, 5455, 6345, 9819, 16365, 19035, 29457, 49095, 51277, 88371, 147285, 153831, 256385, 441855, 461493, 769155, 1384479, 2307465, 4153437, 6922395, 20767185]

約数ペア:

[(1, 20767185), (3, 6922395), (5, 4153437), (9, 2307465), (15, 1384479), (27, 769155), (45, 461493), (47, 441855), (81, 256385), (135, 153831), (141, 147285), (235, 88371), (405, 51277), (423, 49095), (705, 29457), (1091, 19035), (1269, 16365), (2115, 9819), (3273, 6345), (3807, 5455)]