19985700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:362

約数の個数: 144

約数和(自身を含む): 68440064

約数和(自身を除く): 48454364

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 31, 35, 42, 50, 60, 62, 70, 75, 84, 93, 100, 105, 124, 140, 150, 155, 175, 186, 210, 217, 300, 307, 310, 350, 372, 420, 434, 465, 525, 614, 620, 651, 700, 775, 868, 921, 930, 1050, 1085, 1228, 1302, 1535, 1550, 1842, 1860, 2100, 2149, 2170, 2325, 2604, 3070, 3100, 3255, 3684, 4298, 4340, 4605, 4650, 5425, 6140, 6447, 6510, 7675, 8596, 9210, 9300, 9517, 10745, 10850, 12894, 13020, 15350, 16275, 18420, 19034, 21490, 21700, 23025, 25788, 28551, 30700, 32235, 32550, 38068, 42980, 46050, 47585, 53725, 57102, 64470, 65100, 66619, 92100, 95170, 107450, 114204, 128940, 133238, 142755, 161175, 190340, 199857, 214900, 237925, 266476, 285510, 322350, 333095, 399714, 475850, 571020, 644700, 666190, 713775, 799428, 951700, 999285, 1332380, 1427550, 1665475, 1998570, 2855100, 3330950, 3997140, 4996425, 6661900, 9992850, 19985700]

約数ペア:

[(1, 19985700), (2, 9992850), (3, 6661900), (4, 4996425), (5, 3997140), (6, 3330950), (7, 2855100), (10, 1998570), (12, 1665475), (14, 1427550), (15, 1332380), (20, 999285), (21, 951700), (25, 799428), (28, 713775), (30, 666190), (31, 644700), (35, 571020), (42, 475850), (50, 399714), (60, 333095), (62, 322350), (70, 285510), (75, 266476), (84, 237925), (93, 214900), (100, 199857), (105, 190340), (124, 161175), (140, 142755), (150, 133238), (155, 128940), (175, 114204), (186, 107450), (210, 95170), (217, 92100), (300, 66619), (307, 65100), (310, 64470), (350, 57102), (372, 53725), (420, 47585), (434, 46050), (465, 42980), (525, 38068), (614, 32550), (620, 32235), (651, 30700), (700, 28551), (775, 25788), (868, 23025), (921, 21700), (930, 21490), (1050, 19034), (1085, 18420), (1228, 16275), (1302, 15350), (1535, 13020), (1550, 12894), (1842, 10850), (1860, 10745), (2100, 9517), (2149, 9300), (2170, 9210), (2325, 8596), (2604, 7675), (3070, 6510), (3100, 6447), (3255, 6140), (3684, 5425), (4298, 4650), (4340, 4605)]