78971841

素因数分解:

$3^6\times {\mathrm{13}}^2\times {\mathrm{641}}^1$

素因数の和:685

約数の個数: 42

約数和(自身を含む): 128412198

約数和(自身を除く): 49440357

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 169, 243, 351, 507, 641, 729, 1053, 1521, 1923, 3159, 4563, 5769, 8333, 9477, 13689, 17307, 24999, 41067, 51921, 74997, 108329, 123201, 155763, 224991, 324987, 467289, 674973, 974961, 2024919, 2924883, 6074757, 8774649, 26323947, 78971841]

約数ペア:

[(1, 78971841), (3, 26323947), (9, 8774649), (13, 6074757), (27, 2924883), (39, 2024919), (81, 974961), (117, 674973), (169, 467289), (243, 324987), (351, 224991), (507, 155763), (641, 123201), (729, 108329), (1053, 74997), (1521, 51921), (1923, 41067), (3159, 24999), (4563, 17307), (5769, 13689), (8333, 9477)]