81358719

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2\times {\mathrm{73}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 128522016

約数和(自身を除く): 47163297

約数列:

[1, 3, 13, 17, 39, 41, 51, 73, 123, 219, 221, 533, 663, 697, 949, 1241, 1599, 1681, 2091, 2847, 2993, 3723, 5043, 8979, 9061, 16133, 21853, 27183, 28577, 38909, 48399, 50881, 65559, 85731, 116727, 122713, 152643, 368139, 371501, 661453, 1114503, 1595269, 1984359, 2086121, 4785807, 6258363, 27119573, 81358719]

約数ペア:

[(1, 81358719), (3, 27119573), (13, 6258363), (17, 4785807), (39, 2086121), (41, 1984359), (51, 1595269), (73, 1114503), (123, 661453), (219, 371501), (221, 368139), (533, 152643), (663, 122713), (697, 116727), (949, 85731), (1241, 65559), (1599, 50881), (1681, 48399), (2091, 38909), (2847, 28577), (2993, 27183), (3723, 21853), (5043, 16133), (8979, 9061)]