19999719

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1223}}^1$

素因数の和:1331

約数の個数: 24

約数和(自身を含む): 30551040

約数和(自身を除く): 10551321

約数列:

[1, 3, 9, 23, 69, 79, 207, 237, 711, 1223, 1817, 3669, 5451, 11007, 16353, 28129, 84387, 96617, 253161, 289851, 869553, 2222191, 6666573, 19999719]

約数ペア:

[(1, 19999719), (3, 6666573), (9, 2222191), (23, 869553), (69, 289851), (79, 253161), (207, 96617), (237, 84387), (711, 28129), (1223, 16353), (1817, 11007), (3669, 5451)]