18712815

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 35389440

約数和(自身を除く): 16676625

約数列:

[1, 3, 5, 11, 15, 19, 33, 47, 55, 57, 95, 127, 141, 165, 209, 235, 285, 381, 517, 627, 635, 705, 893, 1045, 1397, 1551, 1905, 2413, 2585, 2679, 3135, 4191, 4465, 5969, 6985, 7239, 7755, 9823, 12065, 13395, 17907, 20955, 26543, 29469, 29845, 36195, 49115, 65659, 79629, 89535, 113411, 132715, 147345, 196977, 328295, 340233, 398145, 567055, 984885, 1247521, 1701165, 3742563, 6237605, 18712815]

約数ペア:

[(1, 18712815), (3, 6237605), (5, 3742563), (11, 1701165), (15, 1247521), (19, 984885), (33, 567055), (47, 398145), (55, 340233), (57, 328295), (95, 196977), (127, 147345), (141, 132715), (165, 113411), (209, 89535), (235, 79629), (285, 65659), (381, 49115), (517, 36195), (627, 29845), (635, 29469), (705, 26543), (893, 20955), (1045, 17907), (1397, 13395), (1551, 12065), (1905, 9823), (2413, 7755), (2585, 7239), (2679, 6985), (3135, 5969), (4191, 4465)]