81653805

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{757}}^1$

素因数の和:835

約数の個数: 64

約数和(自身を含む): 157178880

約数和(自身を除く): 75525075

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 47, 51, 85, 135, 141, 153, 235, 255, 423, 459, 705, 757, 765, 799, 1269, 2115, 2271, 2295, 2397, 3785, 3995, 6345, 6813, 7191, 11355, 11985, 12869, 20439, 21573, 34065, 35579, 35955, 38607, 64345, 102195, 106737, 107865, 115821, 177895, 193035, 320211, 347463, 533685, 579105, 604843, 960633, 1601055, 1737315, 1814529, 3024215, 4803165, 5443587, 9072645, 16330761, 27217935, 81653805]

約数ペア:

[(1, 81653805), (3, 27217935), (5, 16330761), (9, 9072645), (15, 5443587), (17, 4803165), (27, 3024215), (45, 1814529), (47, 1737315), (51, 1601055), (85, 960633), (135, 604843), (141, 579105), (153, 533685), (235, 347463), (255, 320211), (423, 193035), (459, 177895), (705, 115821), (757, 107865), (765, 106737), (799, 102195), (1269, 64345), (2115, 38607), (2271, 35955), (2295, 35579), (2397, 34065), (3785, 21573), (3995, 20439), (6345, 12869), (6813, 11985), (7191, 11355)]