278501020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{86491}}^1$

素因数の和:86530

約数の個数: 48

約数和(自身を含む): 697471488

約数和(自身を除く): 418970468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 86491, 172982, 345964, 432455, 605437, 864910, 1210874, 1729820, 1989293, 2421748, 3027185, 3978586, 6054370, 7957172, 9946465, 12108740, 13925051, 19892930, 27850102, 39785860, 55700204, 69625255, 139250510, 278501020]

約数ペア:

[(1, 278501020), (2, 139250510), (4, 69625255), (5, 55700204), (7, 39785860), (10, 27850102), (14, 19892930), (20, 13925051), (23, 12108740), (28, 9946465), (35, 7957172), (46, 6054370), (70, 3978586), (92, 3027185), (115, 2421748), (140, 1989293), (161, 1729820), (230, 1210874), (322, 864910), (460, 605437), (644, 432455), (805, 345964), (1610, 172982), (3220, 86491)]