81139396

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{499}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 158760000

約数和(自身を除く): 77620604

約数列:

[1, 2, 4, 13, 26, 52, 53, 59, 106, 118, 212, 236, 499, 689, 767, 998, 1378, 1534, 1996, 2756, 3068, 3127, 6254, 6487, 12508, 12974, 25948, 26447, 29441, 40651, 52894, 58882, 81302, 105788, 117764, 162604, 343811, 382733, 687622, 765466, 1375244, 1530932, 1560373, 3120746, 6241492, 20284849, 40569698, 81139396]

約数ペア:

[(1, 81139396), (2, 40569698), (4, 20284849), (13, 6241492), (26, 3120746), (52, 1560373), (53, 1530932), (59, 1375244), (106, 765466), (118, 687622), (212, 382733), (236, 343811), (499, 162604), (689, 117764), (767, 105788), (998, 81302), (1378, 58882), (1534, 52894), (1996, 40651), (2756, 29441), (3068, 26447), (3127, 25948), (6254, 12974), (6487, 12508)]