20695275

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 40235520

約数和(自身を除く): 19540245

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 47, 57, 75, 95, 103, 141, 171, 225, 235, 285, 309, 423, 475, 515, 705, 855, 893, 927, 1175, 1425, 1545, 1957, 2115, 2575, 2679, 3525, 4275, 4465, 4635, 4841, 5871, 7725, 8037, 9785, 10575, 13395, 14523, 17613, 22325, 23175, 24205, 29355, 40185, 43569, 48925, 66975, 72615, 88065, 91979, 121025, 146775, 200925, 217845, 275937, 363075, 440325, 459895, 827811, 1089225, 1379685, 2299475, 4139055, 6898425, 20695275]

約数ペア:

[(1, 20695275), (3, 6898425), (5, 4139055), (9, 2299475), (15, 1379685), (19, 1089225), (25, 827811), (45, 459895), (47, 440325), (57, 363075), (75, 275937), (95, 217845), (103, 200925), (141, 146775), (171, 121025), (225, 91979), (235, 88065), (285, 72615), (309, 66975), (423, 48925), (475, 43569), (515, 40185), (705, 29355), (855, 24205), (893, 23175), (927, 22325), (1175, 17613), (1425, 14523), (1545, 13395), (1957, 10575), (2115, 9785), (2575, 8037), (2679, 7725), (3525, 5871), (4275, 4841), (4465, 4635)]