18115515

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1109}}^1$

素因数の和:1145

約数の個数: 48

約数和(自身を含む): 35431200

約数和(自身を除く): 17315685

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 121, 135, 165, 297, 363, 495, 605, 1089, 1109, 1485, 1815, 3267, 3327, 5445, 5545, 9981, 12199, 16335, 16635, 29943, 36597, 49905, 60995, 109791, 134189, 149715, 182985, 329373, 402567, 548955, 670945, 1207701, 1646865, 2012835, 3623103, 6038505, 18115515]

約数ペア:

[(1, 18115515), (3, 6038505), (5, 3623103), (9, 2012835), (11, 1646865), (15, 1207701), (27, 670945), (33, 548955), (45, 402567), (55, 329373), (99, 182985), (121, 149715), (135, 134189), (165, 109791), (297, 60995), (363, 49905), (495, 36597), (605, 29943), (1089, 16635), (1109, 16335), (1485, 12199), (1815, 9981), (3267, 5545), (3327, 5445)]