18660915

素因数分解:

$3^3\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:79

約数の個数: 128

約数和(自身を含む): 43008000

約数和(自身を除く): 24347085

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 31, 35, 39, 45, 49, 63, 65, 91, 93, 105, 117, 135, 147, 155, 189, 195, 217, 245, 273, 279, 315, 343, 351, 403, 441, 455, 465, 585, 637, 651, 735, 819, 837, 945, 1029, 1085, 1209, 1323, 1365, 1395, 1519, 1715, 1755, 1911, 1953, 2015, 2205, 2457, 2821, 3087, 3185, 3255, 3627, 4095, 4185, 4459, 4557, 5145, 5733, 5859, 6045, 6615, 7595, 8463, 9261, 9555, 9765, 10633, 10881, 12285, 13377, 13671, 14105, 15435, 17199, 18135, 19747, 22295, 22785, 25389, 28665, 29295, 31899, 40131, 41013, 42315, 46305, 53165, 54405, 59241, 66885, 68355, 76167, 85995, 95697, 98735, 120393, 126945, 138229, 159495, 177723, 200655, 205065, 287091, 296205, 380835, 414687, 478485, 533169, 601965, 691145, 888615, 1244061, 1435455, 2073435, 2665845, 3732183, 6220305, 18660915]

約数ペア:

[(1, 18660915), (3, 6220305), (5, 3732183), (7, 2665845), (9, 2073435), (13, 1435455), (15, 1244061), (21, 888615), (27, 691145), (31, 601965), (35, 533169), (39, 478485), (45, 414687), (49, 380835), (63, 296205), (65, 287091), (91, 205065), (93, 200655), (105, 177723), (117, 159495), (135, 138229), (147, 126945), (155, 120393), (189, 98735), (195, 95697), (217, 85995), (245, 76167), (273, 68355), (279, 66885), (315, 59241), (343, 54405), (351, 53165), (403, 46305), (441, 42315), (455, 41013), (465, 40131), (585, 31899), (637, 29295), (651, 28665), (735, 25389), (819, 22785), (837, 22295), (945, 19747), (1029, 18135), (1085, 17199), (1209, 15435), (1323, 14105), (1365, 13671), (1395, 13377), (1519, 12285), (1715, 10881), (1755, 10633), (1911, 9765), (1953, 9555), (2015, 9261), (2205, 8463), (2457, 7595), (2821, 6615), (3087, 6045), (3185, 5859), (3255, 5733), (3627, 5145), (4095, 4557), (4185, 4459)]