20678280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:363

約数の個数: 128

約数和(自身を含む): 71884800

約数和(自身を除く): 51206520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 103, 105, 120, 140, 168, 206, 210, 239, 280, 309, 412, 420, 478, 515, 618, 717, 721, 824, 840, 956, 1030, 1195, 1236, 1434, 1442, 1545, 1673, 1912, 2060, 2163, 2390, 2472, 2868, 2884, 3090, 3346, 3585, 3605, 4120, 4326, 4780, 5019, 5736, 5768, 6180, 6692, 7170, 7210, 8365, 8652, 9560, 10038, 10815, 12360, 13384, 14340, 14420, 16730, 17304, 20076, 21630, 24617, 25095, 28680, 28840, 33460, 40152, 43260, 49234, 50190, 66920, 73851, 86520, 98468, 100380, 123085, 147702, 172319, 196936, 200760, 246170, 295404, 344638, 369255, 492340, 516957, 590808, 689276, 738510, 861595, 984680, 1033914, 1378552, 1477020, 1723190, 2067828, 2584785, 2954040, 3446380, 4135656, 5169570, 6892760, 10339140, 20678280]

約数ペア:

[(1, 20678280), (2, 10339140), (3, 6892760), (4, 5169570), (5, 4135656), (6, 3446380), (7, 2954040), (8, 2584785), (10, 2067828), (12, 1723190), (14, 1477020), (15, 1378552), (20, 1033914), (21, 984680), (24, 861595), (28, 738510), (30, 689276), (35, 590808), (40, 516957), (42, 492340), (56, 369255), (60, 344638), (70, 295404), (84, 246170), (103, 200760), (105, 196936), (120, 172319), (140, 147702), (168, 123085), (206, 100380), (210, 98468), (239, 86520), (280, 73851), (309, 66920), (412, 50190), (420, 49234), (478, 43260), (515, 40152), (618, 33460), (717, 28840), (721, 28680), (824, 25095), (840, 24617), (956, 21630), (1030, 20076), (1195, 17304), (1236, 16730), (1434, 14420), (1442, 14340), (1545, 13384), (1673, 12360), (1912, 10815), (2060, 10038), (2163, 9560), (2390, 8652), (2472, 8365), (2868, 7210), (2884, 7170), (3090, 6692), (3346, 6180), (3585, 5768), (3605, 5736), (4120, 5019), (4326, 4780)]