81020072

素因数分解:

$2^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{19819}}^1$

素因数の和:19905

約数の個数: 32

約数和(自身を含む): 176001600

約数和(自身を除く): 94981528

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 73, 146, 292, 511, 584, 1022, 2044, 4088, 19819, 39638, 79276, 138733, 158552, 277466, 554932, 1109864, 1446787, 2893574, 5787148, 10127509, 11574296, 20255018, 40510036, 81020072]

約数ペア:

[(1, 81020072), (2, 40510036), (4, 20255018), (7, 11574296), (8, 10127509), (14, 5787148), (28, 2893574), (56, 1446787), (73, 1109864), (146, 554932), (292, 277466), (511, 158552), (584, 138733), (1022, 79276), (2044, 39638), (4088, 19819)]