81236320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{457}}^1$

素因数の和:584

約数の個数: 96

約数和(自身を含む): 211903776

約数和(自身を除く): 130667456

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 101, 110, 160, 176, 202, 220, 352, 404, 440, 457, 505, 808, 880, 914, 1010, 1111, 1616, 1760, 1828, 2020, 2222, 2285, 3232, 3656, 4040, 4444, 4570, 5027, 5555, 7312, 8080, 8888, 9140, 10054, 11110, 14624, 16160, 17776, 18280, 20108, 22220, 25135, 35552, 36560, 40216, 44440, 46157, 50270, 73120, 80432, 88880, 92314, 100540, 160864, 177760, 184628, 201080, 230785, 369256, 402160, 461570, 507727, 738512, 804320, 923140, 1015454, 1477024, 1846280, 2030908, 2538635, 3692560, 4061816, 5077270, 7385120, 8123632, 10154540, 16247264, 20309080, 40618160, 81236320]

約数ペア:

[(1, 81236320), (2, 40618160), (4, 20309080), (5, 16247264), (8, 10154540), (10, 8123632), (11, 7385120), (16, 5077270), (20, 4061816), (22, 3692560), (32, 2538635), (40, 2030908), (44, 1846280), (55, 1477024), (80, 1015454), (88, 923140), (101, 804320), (110, 738512), (160, 507727), (176, 461570), (202, 402160), (220, 369256), (352, 230785), (404, 201080), (440, 184628), (457, 177760), (505, 160864), (808, 100540), (880, 92314), (914, 88880), (1010, 80432), (1111, 73120), (1616, 50270), (1760, 46157), (1828, 44440), (2020, 40216), (2222, 36560), (2285, 35552), (3232, 25135), (3656, 22220), (4040, 20108), (4444, 18280), (4570, 17776), (5027, 16160), (5555, 14624), (7312, 11110), (8080, 10054), (8888, 9140)]