20315750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:103

約数の個数: 128

約数和(自身を含む): 50319360

約数和(自身を除く): 30003610

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 25, 26, 35, 38, 47, 50, 65, 70, 91, 94, 95, 125, 130, 133, 175, 182, 190, 235, 247, 250, 266, 325, 329, 350, 455, 470, 475, 494, 611, 650, 658, 665, 875, 893, 910, 950, 1175, 1222, 1235, 1330, 1625, 1645, 1729, 1750, 1786, 2275, 2350, 2375, 2470, 3055, 3250, 3290, 3325, 3458, 4277, 4465, 4550, 4750, 5875, 6110, 6175, 6251, 6650, 8225, 8554, 8645, 8930, 11375, 11609, 11750, 12350, 12502, 15275, 16450, 16625, 17290, 21385, 22325, 22750, 23218, 30550, 30875, 31255, 33250, 41125, 42770, 43225, 44650, 58045, 61750, 62510, 76375, 81263, 82250, 86450, 106925, 111625, 116090, 152750, 156275, 162526, 213850, 216125, 223250, 290225, 312550, 406315, 432250, 534625, 580450, 781375, 812630, 1069250, 1451125, 1562750, 2031575, 2902250, 4063150, 10157875, 20315750]

約数ペア:

[(1, 20315750), (2, 10157875), (5, 4063150), (7, 2902250), (10, 2031575), (13, 1562750), (14, 1451125), (19, 1069250), (25, 812630), (26, 781375), (35, 580450), (38, 534625), (47, 432250), (50, 406315), (65, 312550), (70, 290225), (91, 223250), (94, 216125), (95, 213850), (125, 162526), (130, 156275), (133, 152750), (175, 116090), (182, 111625), (190, 106925), (235, 86450), (247, 82250), (250, 81263), (266, 76375), (325, 62510), (329, 61750), (350, 58045), (455, 44650), (470, 43225), (475, 42770), (494, 41125), (611, 33250), (650, 31255), (658, 30875), (665, 30550), (875, 23218), (893, 22750), (910, 22325), (950, 21385), (1175, 17290), (1222, 16625), (1235, 16450), (1330, 15275), (1625, 12502), (1645, 12350), (1729, 11750), (1750, 11609), (1786, 11375), (2275, 8930), (2350, 8645), (2375, 8554), (2470, 8225), (3055, 6650), (3250, 6251), (3290, 6175), (3325, 6110), (3458, 5875), (4277, 4750), (4465, 4550)]