18509985

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 17778015

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 53, 65, 117, 135, 159, 195, 199, 265, 351, 477, 585, 597, 689, 795, 995, 1431, 1755, 1791, 2067, 2385, 2587, 2985, 3445, 5373, 6201, 7155, 7761, 8955, 10335, 10547, 12935, 18603, 23283, 26865, 31005, 31641, 38805, 52735, 69849, 93015, 94923, 116415, 137111, 158205, 284769, 349245, 411333, 474615, 685555, 1233999, 1423845, 2056665, 3701997, 6169995, 18509985]

約数ペア:

[(1, 18509985), (3, 6169995), (5, 3701997), (9, 2056665), (13, 1423845), (15, 1233999), (27, 685555), (39, 474615), (45, 411333), (53, 349245), (65, 284769), (117, 158205), (135, 137111), (159, 116415), (195, 94923), (199, 93015), (265, 69849), (351, 52735), (477, 38805), (585, 31641), (597, 31005), (689, 26865), (795, 23283), (995, 18603), (1431, 12935), (1755, 10547), (1791, 10335), (2067, 8955), (2385, 7761), (2587, 7155), (2985, 6201), (3445, 5373)]