21050331520

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{13597}}^1$

素因数の和:13716

約数の個数: 128

約数和(自身を含む): 52428448800

約数和(自身を除く): 31378117280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 59, 64, 80, 82, 118, 128, 160, 164, 205, 236, 295, 320, 328, 410, 472, 590, 640, 656, 820, 944, 1180, 1312, 1640, 1888, 2360, 2419, 2624, 3280, 3776, 4720, 4838, 5248, 6560, 7552, 9440, 9676, 12095, 13120, 13597, 18880, 19352, 24190, 26240, 27194, 37760, 38704, 48380, 54388, 67985, 77408, 96760, 108776, 135970, 154816, 193520, 217552, 271940, 309632, 387040, 435104, 543880, 557477, 774080, 802223, 870208, 1087760, 1114954, 1548160, 1604446, 1740416, 2175520, 2229908, 2787385, 3208892, 4011115, 4351040, 4459816, 5574770, 6417784, 8022230, 8702080, 8919632, 11149540, 12835568, 16044460, 17839264, 22299080, 25671136, 32088920, 32891143, 35678528, 44598160, 51342272, 64177840, 65782286, 71357056, 89196320, 102684544, 128355680, 131564572, 164455715, 178392640, 256711360, 263129144, 328911430, 356785280, 513422720, 526258288, 657822860, 1052516576, 1315645720, 2105033152, 2631291440, 4210066304, 5262582880, 10525165760, 21050331520]

約数ペア:

[(1, 21050331520), (2, 10525165760), (4, 5262582880), (5, 4210066304), (8, 2631291440), (10, 2105033152), (16, 1315645720), (20, 1052516576), (32, 657822860), (40, 526258288), (41, 513422720), (59, 356785280), (64, 328911430), (80, 263129144), (82, 256711360), (118, 178392640), (128, 164455715), (160, 131564572), (164, 128355680), (205, 102684544), (236, 89196320), (295, 71357056), (320, 65782286), (328, 64177840), (410, 51342272), (472, 44598160), (590, 35678528), (640, 32891143), (656, 32088920), (820, 25671136), (944, 22299080), (1180, 17839264), (1312, 16044460), (1640, 12835568), (1888, 11149540), (2360, 8919632), (2419, 8702080), (2624, 8022230), (3280, 6417784), (3776, 5574770), (4720, 4459816), (4838, 4351040), (5248, 4011115), (6560, 3208892), (7552, 2787385), (9440, 2229908), (9676, 2175520), (12095, 1740416), (13120, 1604446), (13597, 1548160), (18880, 1114954), (19352, 1087760), (24190, 870208), (26240, 802223), (27194, 774080), (37760, 557477), (38704, 543880), (48380, 435104), (54388, 387040), (67985, 309632), (77408, 271940), (96760, 217552), (108776, 193520), (135970, 154816)]