21494800

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:173

約数の個数: 120

約数和(自身を含む): 57083400

約数和(自身を除く): 35588600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 29, 34, 40, 50, 58, 68, 80, 85, 100, 109, 116, 136, 145, 170, 200, 218, 232, 272, 290, 340, 400, 425, 436, 464, 493, 545, 580, 680, 725, 850, 872, 986, 1090, 1160, 1360, 1450, 1700, 1744, 1853, 1972, 2180, 2320, 2465, 2725, 2900, 3161, 3400, 3706, 3944, 4360, 4930, 5450, 5800, 6322, 6800, 7412, 7888, 8720, 9265, 9860, 10900, 11600, 12325, 12644, 14824, 15805, 18530, 19720, 21800, 24650, 25288, 29648, 31610, 37060, 39440, 43600, 46325, 49300, 50576, 53737, 63220, 74120, 79025, 92650, 98600, 107474, 126440, 148240, 158050, 185300, 197200, 214948, 252880, 268685, 316100, 370600, 429896, 537370, 632200, 741200, 859792, 1074740, 1264400, 1343425, 2149480, 2686850, 4298960, 5373700, 10747400, 21494800]

約数ペア:

[(1, 21494800), (2, 10747400), (4, 5373700), (5, 4298960), (8, 2686850), (10, 2149480), (16, 1343425), (17, 1264400), (20, 1074740), (25, 859792), (29, 741200), (34, 632200), (40, 537370), (50, 429896), (58, 370600), (68, 316100), (80, 268685), (85, 252880), (100, 214948), (109, 197200), (116, 185300), (136, 158050), (145, 148240), (170, 126440), (200, 107474), (218, 98600), (232, 92650), (272, 79025), (290, 74120), (340, 63220), (400, 53737), (425, 50576), (436, 49300), (464, 46325), (493, 43600), (545, 39440), (580, 37060), (680, 31610), (725, 29648), (850, 25288), (872, 24650), (986, 21800), (1090, 19720), (1160, 18530), (1360, 15805), (1450, 14824), (1700, 12644), (1744, 12325), (1853, 11600), (1972, 10900), (2180, 9860), (2320, 9265), (2465, 8720), (2725, 7888), (2900, 7412), (3161, 6800), (3400, 6322), (3706, 5800), (3944, 5450), (4360, 4930)]