19938105

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{857}}^1$

素因数の和:926

約数の個数: 48

約数和(自身を含む): 38548224

約数和(自身を除く): 18610119

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 47, 55, 99, 141, 165, 235, 423, 495, 517, 705, 857, 1551, 2115, 2571, 2585, 4285, 4653, 7713, 7755, 9427, 12855, 23265, 28281, 38565, 40279, 47135, 84843, 120837, 141405, 201395, 362511, 424215, 443069, 604185, 1329207, 1812555, 2215345, 3987621, 6646035, 19938105]

約数ペア:

[(1, 19938105), (3, 6646035), (5, 3987621), (9, 2215345), (11, 1812555), (15, 1329207), (33, 604185), (45, 443069), (47, 424215), (55, 362511), (99, 201395), (141, 141405), (165, 120837), (235, 84843), (423, 47135), (495, 40279), (517, 38565), (705, 28281), (857, 23265), (1551, 12855), (2115, 9427), (2571, 7755), (2585, 7713), (4285, 4653)]