177991107

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 297123840

約数和(自身を除く): 119132733

約数列:

[1, 3, 7, 19, 21, 57, 61, 71, 103, 133, 183, 213, 309, 399, 427, 497, 721, 1159, 1281, 1349, 1491, 1957, 2163, 3477, 4047, 4331, 5871, 6283, 7313, 8113, 9443, 12993, 13699, 18849, 21939, 24339, 28329, 30317, 41097, 43981, 51191, 82289, 90951, 119377, 131943, 138947, 153573, 246867, 358131, 416841, 446093, 576023, 835639, 972629, 1338279, 1728069, 2506917, 2917887, 3122651, 8475767, 9367953, 25427301, 59330369, 177991107]

約数ペア:

[(1, 177991107), (3, 59330369), (7, 25427301), (19, 9367953), (21, 8475767), (57, 3122651), (61, 2917887), (71, 2506917), (103, 1728069), (133, 1338279), (183, 972629), (213, 835639), (309, 576023), (399, 446093), (427, 416841), (497, 358131), (721, 246867), (1159, 153573), (1281, 138947), (1349, 131943), (1491, 119377), (1957, 90951), (2163, 82289), (3477, 51191), (4047, 43981), (4331, 41097), (5871, 30317), (6283, 28329), (7313, 24339), (8113, 21939), (9443, 18849), (12993, 13699)]