19109420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86861}}^1$

素因数の和:86881

約数の個数: 24

約数和(自身を含む): 43778448

約数和(自身を除く): 24669028

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86861, 173722, 347444, 434305, 868610, 955471, 1737220, 1910942, 3821884, 4777355, 9554710, 19109420]

約数ペア:

[(1, 19109420), (2, 9554710), (4, 4777355), (5, 3821884), (10, 1910942), (11, 1737220), (20, 955471), (22, 868610), (44, 434305), (55, 347444), (110, 173722), (220, 86861)]