19817495

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^2\times {\mathrm{83}}^1$

素因数の和:211

約数の個数: 24

約数和(自身を含む): 25973136

約数和(自身を除く): 6155641

約数列:

[1, 5, 17, 53, 83, 85, 265, 415, 901, 1411, 2809, 4399, 4505, 7055, 14045, 21995, 47753, 74783, 233147, 238765, 373915, 1165735, 3963499, 19817495]

約数ペア:

[(1, 19817495), (5, 3963499), (17, 1165735), (53, 373915), (83, 238765), (85, 233147), (265, 74783), (415, 47753), (901, 21995), (1411, 14045), (2809, 7055), (4399, 4505)]