19881600

素因数分解:

$2^7\times 3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:155

約数の個数: 192

約数和(自身を含む): 69564000

約数和(自身を除く): 49682400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 25, 30, 32, 38, 40, 48, 50, 57, 60, 64, 75, 76, 80, 95, 96, 100, 109, 114, 120, 128, 150, 152, 160, 190, 192, 200, 218, 228, 240, 285, 300, 304, 320, 327, 380, 384, 400, 436, 456, 475, 480, 545, 570, 600, 608, 640, 654, 760, 800, 872, 912, 950, 960, 1090, 1140, 1200, 1216, 1308, 1425, 1520, 1600, 1635, 1744, 1824, 1900, 1920, 2071, 2180, 2280, 2400, 2432, 2616, 2725, 2850, 3040, 3200, 3270, 3488, 3648, 3800, 4142, 4360, 4560, 4800, 5232, 5450, 5700, 6080, 6213, 6540, 6976, 7296, 7600, 8175, 8284, 8720, 9120, 9600, 10355, 10464, 10900, 11400, 12160, 12426, 13080, 13952, 15200, 16350, 16568, 17440, 18240, 20710, 20928, 21800, 22800, 24852, 26160, 30400, 31065, 32700, 33136, 34880, 36480, 41420, 41856, 43600, 45600, 49704, 51775, 52320, 60800, 62130, 65400, 66272, 69760, 82840, 87200, 91200, 99408, 103550, 104640, 124260, 130800, 132544, 155325, 165680, 174400, 182400, 198816, 207100, 209280, 248520, 261600, 265088, 310650, 331360, 348800, 397632, 414200, 497040, 523200, 621300, 662720, 795264, 828400, 994080, 1046400, 1242600, 1325440, 1656800, 1988160, 2485200, 3313600, 3976320, 4970400, 6627200, 9940800, 19881600]

約数ペア:

[(1, 19881600), (2, 9940800), (3, 6627200), (4, 4970400), (5, 3976320), (6, 3313600), (8, 2485200), (10, 1988160), (12, 1656800), (15, 1325440), (16, 1242600), (19, 1046400), (20, 994080), (24, 828400), (25, 795264), (30, 662720), (32, 621300), (38, 523200), (40, 497040), (48, 414200), (50, 397632), (57, 348800), (60, 331360), (64, 310650), (75, 265088), (76, 261600), (80, 248520), (95, 209280), (96, 207100), (100, 198816), (109, 182400), (114, 174400), (120, 165680), (128, 155325), (150, 132544), (152, 130800), (160, 124260), (190, 104640), (192, 103550), (200, 99408), (218, 91200), (228, 87200), (240, 82840), (285, 69760), (300, 66272), (304, 65400), (320, 62130), (327, 60800), (380, 52320), (384, 51775), (400, 49704), (436, 45600), (456, 43600), (475, 41856), (480, 41420), (545, 36480), (570, 34880), (600, 33136), (608, 32700), (640, 31065), (654, 30400), (760, 26160), (800, 24852), (872, 22800), (912, 21800), (950, 20928), (960, 20710), (1090, 18240), (1140, 17440), (1200, 16568), (1216, 16350), (1308, 15200), (1425, 13952), (1520, 13080), (1600, 12426), (1635, 12160), (1744, 11400), (1824, 10900), (1900, 10464), (1920, 10355), (2071, 9600), (2180, 9120), (2280, 8720), (2400, 8284), (2432, 8175), (2616, 7600), (2725, 7296), (2850, 6976), (3040, 6540), (3200, 6213), (3270, 6080), (3488, 5700), (3648, 5450), (3800, 5232), (4142, 4800), (4360, 4560)]