86571890

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{21589}}^1$

素因数の和:21997

約数の個数: 16

約数和(自身を含む): 156225240

約数和(自身を除く): 69653350

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 21589, 43178, 107945, 215890, 8657189, 17314378, 43285945, 86571890]

約数ペア:

[(1, 86571890), (2, 43285945), (5, 17314378), (10, 8657189), (401, 215890), (802, 107945), (2005, 43178), (4010, 21589)]