205328571

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{263}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 329370624

約数和(自身を除く): 124042053

約数列:

[1, 3, 7, 21, 47, 49, 113, 141, 147, 263, 329, 339, 789, 791, 987, 1841, 2303, 2373, 5311, 5523, 5537, 6909, 12361, 12887, 15933, 16611, 29719, 37083, 37177, 38661, 86527, 89157, 111531, 208033, 259581, 260239, 605689, 624099, 780717, 1396793, 1456231, 1817067, 4190379, 4368693, 9777551, 29332653, 68442857, 205328571]

約数ペア:

[(1, 205328571), (3, 68442857), (7, 29332653), (21, 9777551), (47, 4368693), (49, 4190379), (113, 1817067), (141, 1456231), (147, 1396793), (263, 780717), (329, 624099), (339, 605689), (789, 260239), (791, 259581), (987, 208033), (1841, 111531), (2303, 89157), (2373, 86527), (5311, 38661), (5523, 37177), (5537, 37083), (6909, 29719), (12361, 16611), (12887, 15933)]