18993969

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{541}}^1$

素因数の和:677

約数の個数: 24

約数和(自身を含む): 28409472

約数和(自身を除く): 9415503

約数列:

[1, 3, 9, 47, 83, 141, 249, 423, 541, 747, 1623, 3901, 4869, 11703, 25427, 35109, 44903, 76281, 134709, 228843, 404127, 2110441, 6331323, 18993969]

約数ペア:

[(1, 18993969), (3, 6331323), (9, 2110441), (47, 404127), (83, 228843), (141, 134709), (249, 76281), (423, 44903), (541, 35109), (747, 25427), (1623, 11703), (3901, 4869)]