208158723

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 323481600

約数和(自身を除く): 115322877

約数列:

[1, 3, 9, 29, 47, 71, 87, 141, 213, 239, 261, 423, 639, 717, 1363, 2059, 2151, 3337, 4089, 6177, 6931, 10011, 11233, 12267, 16969, 18531, 20793, 30033, 33699, 50907, 62379, 96773, 101097, 152721, 290319, 325757, 492101, 797543, 870957, 977271, 1476303, 2392629, 2931813, 4428909, 7177887, 23128747, 69386241, 208158723]

約数ペア:

[(1, 208158723), (3, 69386241), (9, 23128747), (29, 7177887), (47, 4428909), (71, 2931813), (87, 2392629), (141, 1476303), (213, 977271), (239, 870957), (261, 797543), (423, 492101), (639, 325757), (717, 290319), (1363, 152721), (2059, 101097), (2151, 96773), (3337, 62379), (4089, 50907), (6177, 33699), (6931, 30033), (10011, 20793), (11233, 18531), (12267, 16969)]