19254820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{719}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 24774620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 103, 130, 206, 260, 412, 515, 719, 1030, 1339, 1438, 2060, 2678, 2876, 3595, 5356, 6695, 7190, 9347, 13390, 14380, 18694, 26780, 37388, 46735, 74057, 93470, 148114, 186940, 296228, 370285, 740570, 962741, 1481140, 1925482, 3850964, 4813705, 9627410, 19254820]

約数ペア:

[(1, 19254820), (2, 9627410), (4, 4813705), (5, 3850964), (10, 1925482), (13, 1481140), (20, 962741), (26, 740570), (52, 370285), (65, 296228), (103, 186940), (130, 148114), (206, 93470), (260, 74057), (412, 46735), (515, 37388), (719, 26780), (1030, 18694), (1339, 14380), (1438, 13390), (2060, 9347), (2678, 7190), (2876, 6695), (3595, 5356)]