28515540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{719}}^1$

素因数の和:1392

約数の個数: 48

約数和(自身を含む): 80075520

約数和(自身を除く): 51559980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 661, 719, 1322, 1438, 1983, 2157, 2644, 2876, 3305, 3595, 3966, 4314, 6610, 7190, 7932, 8628, 9915, 10785, 13220, 14380, 19830, 21570, 39660, 43140, 475259, 950518, 1425777, 1901036, 2376295, 2851554, 4752590, 5703108, 7128885, 9505180, 14257770, 28515540]

約数ペア:

[(1, 28515540), (2, 14257770), (3, 9505180), (4, 7128885), (5, 5703108), (6, 4752590), (10, 2851554), (12, 2376295), (15, 1901036), (20, 1425777), (30, 950518), (60, 475259), (661, 43140), (719, 39660), (1322, 21570), (1438, 19830), (1983, 14380), (2157, 13220), (2644, 10785), (2876, 9915), (3305, 8628), (3595, 7932), (3966, 7190), (4314, 6610)]