18544040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5209}}^1$

素因数の和:5309

約数の個数: 32

約数和(自身を含む): 42201000

約数和(自身を除く): 23656960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5209, 10418, 20836, 26045, 41672, 52090, 104180, 208360, 463601, 927202, 1854404, 2318005, 3708808, 4636010, 9272020, 18544040]

約数ペア:

[(1, 18544040), (2, 9272020), (4, 4636010), (5, 3708808), (8, 2318005), (10, 1854404), (20, 927202), (40, 463601), (89, 208360), (178, 104180), (356, 52090), (445, 41672), (712, 26045), (890, 20836), (1780, 10418), (3560, 5209)]