81815258

素因数分解:

$2^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 143095680

約数和(自身を除く): 61280422

約数列:

[1, 2, 7, 14, 83, 166, 181, 362, 389, 581, 778, 1162, 1267, 2534, 2723, 5446, 15023, 30046, 32287, 64574, 70409, 105161, 140818, 210322, 226009, 452018, 492863, 985726, 5843947, 11687894, 40907629, 81815258]

約数ペア:

[(1, 81815258), (2, 40907629), (7, 11687894), (14, 5843947), (83, 985726), (166, 492863), (181, 452018), (362, 226009), (389, 210322), (581, 140818), (778, 105161), (1162, 70409), (1267, 64574), (2534, 32287), (2723, 30046), (5446, 15023)]