81581895

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2269}}^1$

素因数の和:2344

約数の個数: 48

約数和(自身を含む): 152979840

約数和(自身を除く): 71397945

約数列:

[1, 3, 5, 9, 15, 17, 45, 47, 51, 85, 141, 153, 235, 255, 423, 705, 765, 799, 2115, 2269, 2397, 3995, 6807, 7191, 11345, 11985, 20421, 34035, 35955, 38573, 102105, 106643, 115719, 192865, 319929, 347157, 533215, 578595, 959787, 1599645, 1735785, 1812931, 4798935, 5438793, 9064655, 16316379, 27193965, 81581895]

約数ペア:

[(1, 81581895), (3, 27193965), (5, 16316379), (9, 9064655), (15, 5438793), (17, 4798935), (45, 1812931), (47, 1735785), (51, 1599645), (85, 959787), (141, 578595), (153, 533215), (235, 347157), (255, 319929), (423, 192865), (705, 115719), (765, 106643), (799, 102105), (2115, 38573), (2269, 35955), (2397, 34035), (3995, 20421), (6807, 11985), (7191, 11345)]