28985913

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{619}}^1$

素因数の和:690

約数の個数: 36

約数和(自身を含む): 47167120

約数和(自身を除く): 18181207

約数列:

[1, 3, 9, 11, 33, 43, 99, 121, 129, 363, 387, 473, 619, 1089, 1419, 1857, 4257, 5203, 5571, 6809, 15609, 20427, 26617, 46827, 61281, 74899, 79851, 224697, 239553, 292787, 674091, 878361, 2635083, 3220657, 9661971, 28985913]

約数ペア:

[(1, 28985913), (3, 9661971), (9, 3220657), (11, 2635083), (33, 878361), (43, 674091), (99, 292787), (121, 239553), (129, 224697), (363, 79851), (387, 74899), (473, 61281), (619, 46827), (1089, 26617), (1419, 20427), (1857, 15609), (4257, 6809), (5203, 5571)]