81636368

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:276

約数の個数: 80

約数和(自身を含む): 179988480

約数和(自身を除く): 98352112

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 71, 88, 94, 139, 142, 176, 188, 278, 284, 376, 517, 556, 568, 752, 781, 1034, 1112, 1136, 1529, 1562, 2068, 2224, 3058, 3124, 3337, 4136, 6116, 6248, 6533, 6674, 8272, 9869, 12232, 12496, 13066, 13348, 19738, 24464, 26132, 26696, 36707, 39476, 52264, 53392, 71863, 73414, 78952, 104528, 108559, 143726, 146828, 157904, 217118, 287452, 293656, 434236, 463843, 574904, 587312, 868472, 927686, 1149808, 1736944, 1855372, 3710744, 5102273, 7421488, 10204546, 20409092, 40818184, 81636368]

約数ペア:

[(1, 81636368), (2, 40818184), (4, 20409092), (8, 10204546), (11, 7421488), (16, 5102273), (22, 3710744), (44, 1855372), (47, 1736944), (71, 1149808), (88, 927686), (94, 868472), (139, 587312), (142, 574904), (176, 463843), (188, 434236), (278, 293656), (284, 287452), (376, 217118), (517, 157904), (556, 146828), (568, 143726), (752, 108559), (781, 104528), (1034, 78952), (1112, 73414), (1136, 71863), (1529, 53392), (1562, 52264), (2068, 39476), (2224, 36707), (3058, 26696), (3124, 26132), (3337, 24464), (4136, 19738), (6116, 13348), (6248, 13066), (6533, 12496), (6674, 12232), (8272, 9869)]