20514325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 9483755

約数列:

[1, 5, 13, 17, 25, 47, 65, 79, 85, 221, 235, 325, 395, 425, 611, 799, 1027, 1105, 1175, 1343, 1975, 3055, 3713, 3995, 5135, 5525, 6715, 10387, 15275, 17459, 18565, 19975, 25675, 33575, 48269, 51935, 63121, 87295, 92825, 241345, 259675, 315605, 436475, 820573, 1206725, 1578025, 4102865, 20514325]

約数ペア:

[(1, 20514325), (5, 4102865), (13, 1578025), (17, 1206725), (25, 820573), (47, 436475), (65, 315605), (79, 259675), (85, 241345), (221, 92825), (235, 87295), (325, 63121), (395, 51935), (425, 48269), (611, 33575), (799, 25675), (1027, 19975), (1105, 18565), (1175, 17459), (1343, 15275), (1975, 10387), (3055, 6715), (3713, 5525), (3995, 5135)]