54809320

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2131}}^1$

素因数の和:2785

約数の個数: 32

約数和(自身を含む): 123570720

約数和(自身を除く): 68761400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2131, 2572, 3215, 4262, 5144, 6430, 8524, 10655, 12860, 17048, 21310, 25720, 42620, 85240, 1370233, 2740466, 5480932, 6851165, 10961864, 13702330, 27404660, 54809320]

約数ペア:

[(1, 54809320), (2, 27404660), (4, 13702330), (5, 10961864), (8, 6851165), (10, 5480932), (20, 2740466), (40, 1370233), (643, 85240), (1286, 42620), (2131, 25720), (2572, 21310), (3215, 17048), (4262, 12860), (5144, 10655), (6430, 8524)]