66420560

素因数分解:

$2^4\times 5^1\times {\mathrm{830257}}^1$

素因数の和:830270

約数の個数: 20

約数和(自身を含む): 154427988

約数和(自身を除く): 88007428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 830257, 1660514, 3321028, 4151285, 6642056, 8302570, 13284112, 16605140, 33210280, 66420560]

約数ペア:

[(1, 66420560), (2, 33210280), (4, 16605140), (5, 13284112), (8, 8302570), (10, 6642056), (16, 4151285), (20, 3321028), (40, 1660514), (80, 830257)]