55688440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32377}}^1$

素因数の和:32431

約数の個数: 32

約数和(自身を含む): 128216880

約数和(自身を除く): 72528440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 32377, 64754, 129508, 161885, 259016, 323770, 647540, 1295080, 1392211, 2784422, 5568844, 6961055, 11137688, 13922110, 27844220, 55688440]

約数ペア:

[(1, 55688440), (2, 27844220), (4, 13922110), (5, 11137688), (8, 6961055), (10, 5568844), (20, 2784422), (40, 1392211), (43, 1295080), (86, 647540), (172, 323770), (215, 259016), (344, 161885), (430, 129508), (860, 64754), (1720, 32377)]