20960048

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{293}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 43309728

約数和(自身を除く): 22349680

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 263, 272, 293, 526, 586, 1052, 1172, 2104, 2344, 4208, 4471, 4688, 4981, 8942, 9962, 17884, 19924, 35768, 39848, 71536, 77059, 79696, 154118, 308236, 616472, 1232944, 1310003, 2620006, 5240012, 10480024, 20960048]

約数ペア:

[(1, 20960048), (2, 10480024), (4, 5240012), (8, 2620006), (16, 1310003), (17, 1232944), (34, 616472), (68, 308236), (136, 154118), (263, 79696), (272, 77059), (293, 71536), (526, 39848), (586, 35768), (1052, 19924), (1172, 17884), (2104, 9962), (2344, 8942), (4208, 4981), (4471, 4688)]