28638940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{373}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 65973600

約数和(自身を除く): 37334660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 349, 373, 698, 746, 1396, 1492, 1745, 1865, 3490, 3730, 3839, 4103, 6980, 7460, 7678, 8206, 15356, 16412, 19195, 20515, 38390, 41030, 76780, 82060, 130177, 260354, 520708, 650885, 1301770, 1431947, 2603540, 2863894, 5727788, 7159735, 14319470, 28638940]

約数ペア:

[(1, 28638940), (2, 14319470), (4, 7159735), (5, 5727788), (10, 2863894), (11, 2603540), (20, 1431947), (22, 1301770), (44, 650885), (55, 520708), (110, 260354), (220, 130177), (349, 82060), (373, 76780), (698, 41030), (746, 38390), (1396, 20515), (1492, 19195), (1745, 16412), (1865, 15356), (3490, 8206), (3730, 7678), (3839, 7460), (4103, 6980)]