20015776

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{563}}^1$

素因数の和:685

約数の個数: 48

約数和(自身を含む): 43491168

約数和(自身を除く): 23475392

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 101, 176, 202, 352, 404, 563, 808, 1111, 1126, 1616, 2222, 2252, 3232, 4444, 4504, 6193, 8888, 9008, 12386, 17776, 18016, 24772, 35552, 49544, 56863, 99088, 113726, 198176, 227452, 454904, 625493, 909808, 1250986, 1819616, 2501972, 5003944, 10007888, 20015776]

約数ペア:

[(1, 20015776), (2, 10007888), (4, 5003944), (8, 2501972), (11, 1819616), (16, 1250986), (22, 909808), (32, 625493), (44, 454904), (88, 227452), (101, 198176), (176, 113726), (202, 99088), (352, 56863), (404, 49544), (563, 35552), (808, 24772), (1111, 18016), (1126, 17776), (1616, 12386), (2222, 9008), (2252, 8888), (3232, 6193), (4444, 4504)]