19991136

素因数分解:

$2^5\times 3^1\times {\mathrm{11}}^2\times {\mathrm{1721}}^1$

素因数の和:1756

約数の個数: 72

約数和(自身を含む): 57714552

約数和(自身を除く): 37723416

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 32, 33, 44, 48, 66, 88, 96, 121, 132, 176, 242, 264, 352, 363, 484, 528, 726, 968, 1056, 1452, 1721, 1936, 2904, 3442, 3872, 5163, 5808, 6884, 10326, 11616, 13768, 18931, 20652, 27536, 37862, 41304, 55072, 56793, 75724, 82608, 113586, 151448, 165216, 208241, 227172, 302896, 416482, 454344, 605792, 624723, 832964, 908688, 1249446, 1665928, 1817376, 2498892, 3331856, 4997784, 6663712, 9995568, 19991136]

約数ペア:

[(1, 19991136), (2, 9995568), (3, 6663712), (4, 4997784), (6, 3331856), (8, 2498892), (11, 1817376), (12, 1665928), (16, 1249446), (22, 908688), (24, 832964), (32, 624723), (33, 605792), (44, 454344), (48, 416482), (66, 302896), (88, 227172), (96, 208241), (121, 165216), (132, 151448), (176, 113586), (242, 82608), (264, 75724), (352, 56793), (363, 55072), (484, 41304), (528, 37862), (726, 27536), (968, 20652), (1056, 18931), (1452, 13768), (1721, 11616), (1936, 10326), (2904, 6884), (3442, 5808), (3872, 5163)]