55777520

素因数分解:

$2^4\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1009}}^1$

素因数の和:1713

約数の個数: 40

約数和(自身を含む): 129999120

約数和(自身を除く): 74221600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 691, 1009, 1382, 2018, 2764, 3455, 4036, 5045, 5528, 6910, 8072, 10090, 11056, 13820, 16144, 20180, 27640, 40360, 55280, 80720, 697219, 1394438, 2788876, 3486095, 5577752, 6972190, 11155504, 13944380, 27888760, 55777520]

約数ペア:

[(1, 55777520), (2, 27888760), (4, 13944380), (5, 11155504), (8, 6972190), (10, 5577752), (16, 3486095), (20, 2788876), (40, 1394438), (80, 697219), (691, 80720), (1009, 55280), (1382, 40360), (2018, 27640), (2764, 20180), (3455, 16144), (4036, 13820), (5045, 11056), (5528, 10090), (6910, 8072)]