81745911

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{563}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 136727136

約数和(自身を除く): 54981225

約数列:

[1, 3, 9, 13, 17, 39, 51, 73, 117, 153, 219, 221, 563, 657, 663, 949, 1241, 1689, 1989, 2847, 3723, 5067, 7319, 8541, 9571, 11169, 16133, 21957, 28713, 41099, 48399, 65871, 86139, 123297, 124423, 145197, 369891, 373269, 534287, 698683, 1119807, 1602861, 2096049, 4808583, 6288147, 9082879, 27248637, 81745911]

約数ペア:

[(1, 81745911), (3, 27248637), (9, 9082879), (13, 6288147), (17, 4808583), (39, 2096049), (51, 1602861), (73, 1119807), (117, 698683), (153, 534287), (219, 373269), (221, 369891), (563, 145197), (657, 124423), (663, 123297), (949, 86139), (1241, 65871), (1689, 48399), (1989, 41099), (2847, 28713), (3723, 21957), (5067, 16133), (7319, 11169), (8541, 9571)]