19119980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{373}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 44108064

約数和(自身を除く): 24988084

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 233, 373, 466, 746, 932, 1165, 1492, 1865, 2330, 2563, 3730, 4103, 4660, 5126, 7460, 8206, 10252, 12815, 16412, 20515, 25630, 41030, 51260, 82060, 86909, 173818, 347636, 434545, 869090, 955999, 1738180, 1911998, 3823996, 4779995, 9559990, 19119980]

約数ペア:

[(1, 19119980), (2, 9559990), (4, 4779995), (5, 3823996), (10, 1911998), (11, 1738180), (20, 955999), (22, 869090), (44, 434545), (55, 347636), (110, 173818), (220, 86909), (233, 82060), (373, 51260), (466, 41030), (746, 25630), (932, 20515), (1165, 16412), (1492, 12815), (1865, 10252), (2330, 8206), (2563, 7460), (3730, 5126), (4103, 4660)]