19542020

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2389}}^1$

素因数の和:2807

約数の個数: 24

約数和(自身を含む): 41155800

約数和(自身を除く): 21613780

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 2389, 4090, 4778, 8180, 9556, 11945, 23890, 47780, 977101, 1954202, 3908404, 4885505, 9771010, 19542020]

約数ペア:

[(1, 19542020), (2, 9771010), (4, 4885505), (5, 3908404), (10, 1954202), (20, 977101), (409, 47780), (818, 23890), (1636, 11945), (2045, 9556), (2389, 8180), (4090, 4778)]