81863782

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{397}}^1$

素因数の和:533

約数の個数: 64

約数和(自身を含む): 166892544

約数和(自身を除く): 85028762

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 103, 143, 154, 182, 206, 286, 397, 721, 794, 1001, 1133, 1339, 1442, 2002, 2266, 2678, 2779, 4367, 5161, 5558, 7931, 8734, 9373, 10322, 14729, 15862, 18746, 29458, 30569, 36127, 40891, 56771, 61138, 72254, 81782, 103103, 113542, 206206, 286237, 397397, 449801, 531583, 572474, 794794, 899602, 1063166, 3148607, 3721081, 5847413, 6297214, 7442162, 11694826, 40931891, 81863782]

約数ペア:

[(1, 81863782), (2, 40931891), (7, 11694826), (11, 7442162), (13, 6297214), (14, 5847413), (22, 3721081), (26, 3148607), (77, 1063166), (91, 899602), (103, 794794), (143, 572474), (154, 531583), (182, 449801), (206, 397397), (286, 286237), (397, 206206), (721, 113542), (794, 103103), (1001, 81782), (1133, 72254), (1339, 61138), (1442, 56771), (2002, 40891), (2266, 36127), (2678, 30569), (2779, 29458), (4367, 18746), (5161, 15862), (5558, 14729), (7931, 10322), (8734, 9373)]