90168760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2029}}^1$

素因数の和:2152

約数の個数: 64

約数和(自身を含む): 223624800

約数和(自身を除く): 133456040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 505, 808, 1010, 1111, 2020, 2029, 2222, 4040, 4058, 4444, 5555, 8116, 8888, 10145, 11110, 16232, 20290, 22220, 22319, 40580, 44440, 44638, 81160, 89276, 111595, 178552, 204929, 223190, 409858, 446380, 819716, 892760, 1024645, 1639432, 2049290, 2254219, 4098580, 4508438, 8197160, 9016876, 11271095, 18033752, 22542190, 45084380, 90168760]

約数ペア:

[(1, 90168760), (2, 45084380), (4, 22542190), (5, 18033752), (8, 11271095), (10, 9016876), (11, 8197160), (20, 4508438), (22, 4098580), (40, 2254219), (44, 2049290), (55, 1639432), (88, 1024645), (101, 892760), (110, 819716), (202, 446380), (220, 409858), (404, 223190), (440, 204929), (505, 178552), (808, 111595), (1010, 89276), (1111, 81160), (2020, 44638), (2029, 44440), (2222, 40580), (4040, 22319), (4058, 22220), (4444, 20290), (5555, 16232), (8116, 11110), (8888, 10145)]