78257745

素因数分解:

$3^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{971}}^1$

素因数の和:1187

約数の個数: 40

約数和(自身を含む): 141134400

約数和(自身を除く): 62876655

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 199, 405, 597, 971, 995, 1791, 2913, 2985, 4855, 5373, 8739, 8955, 14565, 16119, 26217, 26865, 43695, 78651, 80595, 131085, 193229, 393255, 579687, 966145, 1739061, 2898435, 5217183, 8695305, 15651549, 26085915, 78257745]

約数ペア:

[(1, 78257745), (3, 26085915), (5, 15651549), (9, 8695305), (15, 5217183), (27, 2898435), (45, 1739061), (81, 966145), (135, 579687), (199, 393255), (405, 193229), (597, 131085), (971, 80595), (995, 78651), (1791, 43695), (2913, 26865), (2985, 26217), (4855, 16119), (5373, 14565), (8739, 8955)]