19515925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 29248128

約数和(自身を除く): 9732203

約数列:

[1, 5, 11, 13, 25, 53, 55, 65, 103, 143, 265, 275, 325, 515, 583, 689, 715, 1133, 1325, 1339, 2575, 2915, 3445, 3575, 5459, 5665, 6695, 7579, 14575, 14729, 17225, 27295, 28325, 33475, 37895, 60049, 70967, 73645, 136475, 189475, 300245, 354835, 368225, 780637, 1501225, 1774175, 3903185, 19515925]

約数ペア:

[(1, 19515925), (5, 3903185), (11, 1774175), (13, 1501225), (25, 780637), (53, 368225), (55, 354835), (65, 300245), (103, 189475), (143, 136475), (265, 73645), (275, 70967), (325, 60049), (515, 37895), (583, 33475), (689, 28325), (715, 27295), (1133, 17225), (1325, 14729), (1339, 14575), (2575, 7579), (2915, 6695), (3445, 5665), (3575, 5459)]