19519280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{541}}^1$

素因数の和:606

約数の個数: 80

約数和(自身を含む): 50809248

約数和(自身を除く): 31289968

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 41, 44, 55, 80, 82, 88, 110, 164, 176, 205, 220, 328, 410, 440, 451, 541, 656, 820, 880, 902, 1082, 1640, 1804, 2164, 2255, 2705, 3280, 3608, 4328, 4510, 5410, 5951, 7216, 8656, 9020, 10820, 11902, 18040, 21640, 22181, 23804, 29755, 36080, 43280, 44362, 47608, 59510, 88724, 95216, 110905, 119020, 177448, 221810, 238040, 243991, 354896, 443620, 476080, 487982, 887240, 975964, 1219955, 1774480, 1951928, 2439910, 3903856, 4879820, 9759640, 19519280]

約数ペア:

[(1, 19519280), (2, 9759640), (4, 4879820), (5, 3903856), (8, 2439910), (10, 1951928), (11, 1774480), (16, 1219955), (20, 975964), (22, 887240), (40, 487982), (41, 476080), (44, 443620), (55, 354896), (80, 243991), (82, 238040), (88, 221810), (110, 177448), (164, 119020), (176, 110905), (205, 95216), (220, 88724), (328, 59510), (410, 47608), (440, 44362), (451, 43280), (541, 36080), (656, 29755), (820, 23804), (880, 22181), (902, 21640), (1082, 18040), (1640, 11902), (1804, 10820), (2164, 9020), (2255, 8656), (2705, 7216), (3280, 5951), (3608, 5410), (4328, 4510)]