81664005

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 145006848

約数和(自身を除く): 63342843

約数列:

[1, 3, 5, 15, 17, 41, 51, 73, 85, 107, 123, 205, 219, 255, 321, 365, 535, 615, 697, 1095, 1241, 1605, 1819, 2091, 2993, 3485, 3723, 4387, 5457, 6205, 7811, 8979, 9095, 10455, 13161, 14965, 18615, 21935, 23433, 27285, 39055, 44895, 50881, 65805, 74579, 117165, 132787, 152643, 223737, 254405, 320251, 372895, 398361, 663935, 763215, 960753, 1118685, 1601255, 1991805, 4803765, 5444267, 16332801, 27221335, 81664005]

約数ペア:

[(1, 81664005), (3, 27221335), (5, 16332801), (15, 5444267), (17, 4803765), (41, 1991805), (51, 1601255), (73, 1118685), (85, 960753), (107, 763215), (123, 663935), (205, 398361), (219, 372895), (255, 320251), (321, 254405), (365, 223737), (535, 152643), (615, 132787), (697, 117165), (1095, 74579), (1241, 65805), (1605, 50881), (1819, 44895), (2091, 39055), (2993, 27285), (3485, 23433), (3723, 21935), (4387, 18615), (5457, 14965), (6205, 13161), (7811, 10455), (8979, 9095)]