19986400

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:153

約数の個数: 144

約数和(自身を含む): 57746304

約数和(自身を除く): 37759904

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 43, 50, 56, 70, 80, 83, 86, 100, 112, 140, 160, 166, 172, 175, 200, 215, 224, 280, 301, 332, 344, 350, 400, 415, 430, 560, 581, 602, 664, 688, 700, 800, 830, 860, 1075, 1120, 1162, 1204, 1328, 1376, 1400, 1505, 1660, 1720, 2075, 2150, 2324, 2408, 2656, 2800, 2905, 3010, 3320, 3440, 3569, 4150, 4300, 4648, 4816, 5600, 5810, 6020, 6640, 6880, 7138, 7525, 8300, 8600, 9296, 9632, 11620, 12040, 13280, 14276, 14525, 15050, 16600, 17200, 17845, 18592, 23240, 24080, 24983, 28552, 29050, 30100, 33200, 34400, 35690, 46480, 48160, 49966, 57104, 58100, 60200, 66400, 71380, 89225, 92960, 99932, 114208, 116200, 120400, 124915, 142760, 178450, 199864, 232400, 240800, 249830, 285520, 356900, 399728, 464800, 499660, 571040, 624575, 713800, 799456, 999320, 1249150, 1427600, 1998640, 2498300, 2855200, 3997280, 4996600, 9993200, 19986400]

約数ペア:

[(1, 19986400), (2, 9993200), (4, 4996600), (5, 3997280), (7, 2855200), (8, 2498300), (10, 1998640), (14, 1427600), (16, 1249150), (20, 999320), (25, 799456), (28, 713800), (32, 624575), (35, 571040), (40, 499660), (43, 464800), (50, 399728), (56, 356900), (70, 285520), (80, 249830), (83, 240800), (86, 232400), (100, 199864), (112, 178450), (140, 142760), (160, 124915), (166, 120400), (172, 116200), (175, 114208), (200, 99932), (215, 92960), (224, 89225), (280, 71380), (301, 66400), (332, 60200), (344, 58100), (350, 57104), (400, 49966), (415, 48160), (430, 46480), (560, 35690), (581, 34400), (602, 33200), (664, 30100), (688, 29050), (700, 28552), (800, 24983), (830, 24080), (860, 23240), (1075, 18592), (1120, 17845), (1162, 17200), (1204, 16600), (1328, 15050), (1376, 14525), (1400, 14276), (1505, 13280), (1660, 12040), (1720, 11620), (2075, 9632), (2150, 9296), (2324, 8600), (2408, 8300), (2656, 7525), (2800, 7138), (2905, 6880), (3010, 6640), (3320, 6020), (3440, 5810), (3569, 5600), (4150, 4816), (4300, 4648)]