18886095

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 36480000

約数和(自身を除く): 17593905

約数列:

[1, 3, 5, 9, 15, 19, 27, 37, 45, 57, 95, 111, 135, 171, 185, 199, 285, 333, 513, 555, 597, 703, 855, 995, 999, 1665, 1791, 2109, 2565, 2985, 3515, 3781, 4995, 5373, 6327, 7363, 8955, 10545, 11343, 18905, 18981, 22089, 26865, 31635, 34029, 36815, 56715, 66267, 94905, 102087, 110445, 139897, 170145, 198801, 331335, 419691, 510435, 699485, 994005, 1259073, 2098455, 3777219, 6295365, 18886095]

約数ペア:

[(1, 18886095), (3, 6295365), (5, 3777219), (9, 2098455), (15, 1259073), (19, 994005), (27, 699485), (37, 510435), (45, 419691), (57, 331335), (95, 198801), (111, 170145), (135, 139897), (171, 110445), (185, 102087), (199, 94905), (285, 66267), (333, 56715), (513, 36815), (555, 34029), (597, 31635), (703, 26865), (855, 22089), (995, 18981), (999, 18905), (1665, 11343), (1791, 10545), (2109, 8955), (2565, 7363), (2985, 6327), (3515, 5373), (3781, 4995)]