18931905

素因数分解:

$3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1637}}^1$

素因数の和:1905

約数の個数: 24

約数和(自身を含む): 32963112

約数和(自身を除く): 14031207

約数列:

[1, 3, 5, 9, 15, 45, 257, 771, 1285, 1637, 2313, 3855, 4911, 8185, 11565, 14733, 24555, 73665, 420709, 1262127, 2103545, 3786381, 6310635, 18931905]

約数ペア:

[(1, 18931905), (3, 6310635), (5, 3786381), (9, 2103545), (15, 1262127), (45, 420709), (257, 73665), (771, 24555), (1285, 14733), (1637, 11565), (2313, 8185), (3855, 4911)]