81878265

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:619

約数の個数: 72

約数和(自身を含む): 167738688

約数和(自身を除く): 85860423

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 71, 105, 147, 213, 245, 315, 355, 441, 497, 523, 639, 735, 1065, 1491, 1569, 2205, 2485, 2615, 3195, 3479, 3661, 4473, 4707, 7455, 7845, 10437, 10983, 17395, 18305, 22365, 23535, 25627, 31311, 32949, 37133, 52185, 54915, 76881, 111399, 128135, 156555, 164745, 185665, 230643, 259931, 334197, 384405, 556995, 779793, 1153215, 1299655, 1670985, 1819517, 2339379, 3898965, 5458551, 9097585, 11696895, 16375653, 27292755, 81878265]

約数ペア:

[(1, 81878265), (3, 27292755), (5, 16375653), (7, 11696895), (9, 9097585), (15, 5458551), (21, 3898965), (35, 2339379), (45, 1819517), (49, 1670985), (63, 1299655), (71, 1153215), (105, 779793), (147, 556995), (213, 384405), (245, 334197), (315, 259931), (355, 230643), (441, 185665), (497, 164745), (523, 156555), (639, 128135), (735, 111399), (1065, 76881), (1491, 54915), (1569, 52185), (2205, 37133), (2485, 32949), (2615, 31311), (3195, 25627), (3479, 23535), (3661, 22365), (4473, 18305), (4707, 17395), (7455, 10983), (7845, 10437)]