87986980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{40361}}^1$

素因数の和:40479

約数の個数: 24

約数和(自身を含む): 186472440

約数和(自身を除く): 98485460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 40361, 80722, 161444, 201805, 403610, 807220, 4399349, 8798698, 17597396, 21996745, 43993490, 87986980]

約数ペア:

[(1, 87986980), (2, 43993490), (4, 21996745), (5, 17597396), (10, 8798698), (20, 4399349), (109, 807220), (218, 403610), (436, 201805), (545, 161444), (1090, 80722), (2180, 40361)]