19917243

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 29515200

約数和(自身を除く): 9597957

約数列:

[1, 3, 9, 79, 109, 237, 257, 327, 711, 771, 981, 2313, 8611, 20303, 25833, 28013, 60909, 77499, 84039, 182727, 252117, 2213027, 6639081, 19917243]

約数ペア:

[(1, 19917243), (3, 6639081), (9, 2213027), (79, 252117), (109, 182727), (237, 84039), (257, 77499), (327, 60909), (711, 28013), (771, 25833), (981, 20303), (2313, 8611)]