90205730

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{2129}}^1$

素因数の和:2378

約数の個数: 32

約数和(自身を含む): 171763200

約数和(自身を除く): 81557470

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 223, 446, 1115, 2129, 2230, 4237, 4258, 8474, 10645, 21185, 21290, 40451, 42370, 80902, 202255, 404510, 474767, 949534, 2373835, 4747670, 9020573, 18041146, 45102865, 90205730]

約数ペア:

[(1, 90205730), (2, 45102865), (5, 18041146), (10, 9020573), (19, 4747670), (38, 2373835), (95, 949534), (190, 474767), (223, 404510), (446, 202255), (1115, 80902), (2129, 42370), (2230, 40451), (4237, 21290), (4258, 21185), (8474, 10645)]