21080675

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 33426432

約数和(自身を除く): 12345757

約数列:

[1, 5, 7, 11, 25, 35, 47, 55, 77, 175, 233, 235, 275, 329, 385, 517, 1165, 1175, 1631, 1645, 1925, 2563, 2585, 3619, 5825, 8155, 8225, 10951, 12815, 12925, 17941, 18095, 40775, 54755, 64075, 76657, 89705, 90475, 120461, 273775, 383285, 448525, 602305, 843227, 1916425, 3011525, 4216135, 21080675]

約数ペア:

[(1, 21080675), (5, 4216135), (7, 3011525), (11, 1916425), (25, 843227), (35, 602305), (47, 448525), (55, 383285), (77, 273775), (175, 120461), (233, 90475), (235, 89705), (275, 76657), (329, 64075), (385, 54755), (517, 40775), (1165, 18095), (1175, 17941), (1631, 12925), (1645, 12815), (1925, 10951), (2563, 8225), (2585, 8155), (3619, 5825)]