21049000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:156

約数の個数: 128

約数和(自身を含む): 58705920

約数和(自身を除く): 37656920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 97, 100, 124, 125, 140, 155, 175, 194, 200, 217, 248, 250, 280, 310, 350, 388, 434, 485, 500, 620, 679, 700, 775, 776, 868, 875, 970, 1000, 1085, 1240, 1358, 1400, 1550, 1736, 1750, 1940, 2170, 2425, 2716, 3007, 3100, 3395, 3500, 3875, 3880, 4340, 4850, 5425, 5432, 6014, 6200, 6790, 7000, 7750, 8680, 9700, 10850, 12028, 12125, 13580, 15035, 15500, 16975, 19400, 21049, 21700, 24056, 24250, 27125, 27160, 30070, 31000, 33950, 42098, 43400, 48500, 54250, 60140, 67900, 75175, 84196, 84875, 97000, 105245, 108500, 120280, 135800, 150350, 168392, 169750, 210490, 217000, 300700, 339500, 375875, 420980, 526225, 601400, 679000, 751750, 841960, 1052450, 1503500, 2104900, 2631125, 3007000, 4209800, 5262250, 10524500, 21049000]

約数ペア:

[(1, 21049000), (2, 10524500), (4, 5262250), (5, 4209800), (7, 3007000), (8, 2631125), (10, 2104900), (14, 1503500), (20, 1052450), (25, 841960), (28, 751750), (31, 679000), (35, 601400), (40, 526225), (50, 420980), (56, 375875), (62, 339500), (70, 300700), (97, 217000), (100, 210490), (124, 169750), (125, 168392), (140, 150350), (155, 135800), (175, 120280), (194, 108500), (200, 105245), (217, 97000), (248, 84875), (250, 84196), (280, 75175), (310, 67900), (350, 60140), (388, 54250), (434, 48500), (485, 43400), (500, 42098), (620, 33950), (679, 31000), (700, 30070), (775, 27160), (776, 27125), (868, 24250), (875, 24056), (970, 21700), (1000, 21049), (1085, 19400), (1240, 16975), (1358, 15500), (1400, 15035), (1550, 13580), (1736, 12125), (1750, 12028), (1940, 10850), (2170, 9700), (2425, 8680), (2716, 7750), (3007, 7000), (3100, 6790), (3395, 6200), (3500, 6014), (3875, 5432), (3880, 5425), (4340, 4850)]