20778800

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:247

約数の個数: 120

約数和(自身を含む): 58767072

約数和(自身を除く): 37988272

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 41, 50, 56, 70, 80, 82, 100, 112, 140, 164, 175, 181, 200, 205, 280, 287, 328, 350, 362, 400, 410, 560, 574, 656, 700, 724, 820, 905, 1025, 1148, 1267, 1400, 1435, 1448, 1640, 1810, 2050, 2296, 2534, 2800, 2870, 2896, 3280, 3620, 4100, 4525, 4592, 5068, 5740, 6335, 7175, 7240, 7421, 8200, 9050, 10136, 11480, 12670, 14350, 14480, 14842, 16400, 18100, 20272, 22960, 25340, 28700, 29684, 31675, 36200, 37105, 50680, 51947, 57400, 59368, 63350, 72400, 74210, 101360, 103894, 114800, 118736, 126700, 148420, 185525, 207788, 253400, 259735, 296840, 371050, 415576, 506800, 519470, 593680, 742100, 831152, 1038940, 1298675, 1484200, 2077880, 2597350, 2968400, 4155760, 5194700, 10389400, 20778800]

約数ペア:

[(1, 20778800), (2, 10389400), (4, 5194700), (5, 4155760), (7, 2968400), (8, 2597350), (10, 2077880), (14, 1484200), (16, 1298675), (20, 1038940), (25, 831152), (28, 742100), (35, 593680), (40, 519470), (41, 506800), (50, 415576), (56, 371050), (70, 296840), (80, 259735), (82, 253400), (100, 207788), (112, 185525), (140, 148420), (164, 126700), (175, 118736), (181, 114800), (200, 103894), (205, 101360), (280, 74210), (287, 72400), (328, 63350), (350, 59368), (362, 57400), (400, 51947), (410, 50680), (560, 37105), (574, 36200), (656, 31675), (700, 29684), (724, 28700), (820, 25340), (905, 22960), (1025, 20272), (1148, 18100), (1267, 16400), (1400, 14842), (1435, 14480), (1448, 14350), (1640, 12670), (1810, 11480), (2050, 10136), (2296, 9050), (2534, 8200), (2800, 7421), (2870, 7240), (2896, 7175), (3280, 6335), (3620, 5740), (4100, 5068), (4525, 4592)]