90891280

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{8293}}^1$

素因数の和:8443

約数の個数: 40

約数和(自身を含む): 212890392

約数和(自身を除く): 121999112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 2192, 2740, 5480, 8293, 10960, 16586, 33172, 41465, 66344, 82930, 132688, 165860, 331720, 663440, 1136141, 2272282, 4544564, 5680705, 9089128, 11361410, 18178256, 22722820, 45445640, 90891280]

約数ペア:

[(1, 90891280), (2, 45445640), (4, 22722820), (5, 18178256), (8, 11361410), (10, 9089128), (16, 5680705), (20, 4544564), (40, 2272282), (80, 1136141), (137, 663440), (274, 331720), (548, 165860), (685, 132688), (1096, 82930), (1370, 66344), (2192, 41465), (2740, 33172), (5480, 16586), (8293, 10960)]