21038628

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{859}}^1$

素因数の和:1036

約数の個数: 48

約数和(自身を含む): 53264960

約数和(自身を除く): 32226332

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 157, 314, 471, 628, 859, 942, 1718, 1884, 2041, 2577, 3436, 4082, 5154, 6123, 8164, 10308, 11167, 12246, 22334, 24492, 33501, 44668, 67002, 134004, 134863, 269726, 404589, 539452, 809178, 1618356, 1753219, 3506438, 5259657, 7012876, 10519314, 21038628]

約数ペア:

[(1, 21038628), (2, 10519314), (3, 7012876), (4, 5259657), (6, 3506438), (12, 1753219), (13, 1618356), (26, 809178), (39, 539452), (52, 404589), (78, 269726), (156, 134863), (157, 134004), (314, 67002), (471, 44668), (628, 33501), (859, 24492), (942, 22334), (1718, 12246), (1884, 11167), (2041, 10308), (2577, 8164), (3436, 6123), (4082, 5154)]