20707780

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4643}}^1$

素因数の和:4875

約数の個数: 24

約数和(自身を含む): 43690752

約数和(自身を除く): 22982972

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4643, 9286, 18572, 23215, 46430, 92860, 1035389, 2070778, 4141556, 5176945, 10353890, 20707780]

約数ペア:

[(1, 20707780), (2, 10353890), (4, 5176945), (5, 4141556), (10, 2070778), (20, 1035389), (223, 92860), (446, 46430), (892, 23215), (1115, 18572), (2230, 9286), (4460, 4643)]