20011864

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{137}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 41110200

約数和(自身を除く): 21098336

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 124, 137, 152, 248, 274, 548, 589, 961, 1096, 1178, 1922, 2356, 2603, 3844, 4247, 4712, 5206, 7688, 8494, 10412, 16988, 18259, 20824, 33976, 36518, 73036, 80693, 131657, 146072, 161386, 263314, 322772, 526628, 645544, 1053256, 2501483, 5002966, 10005932, 20011864]

約数ペア:

[(1, 20011864), (2, 10005932), (4, 5002966), (8, 2501483), (19, 1053256), (31, 645544), (38, 526628), (62, 322772), (76, 263314), (124, 161386), (137, 146072), (152, 131657), (248, 80693), (274, 73036), (548, 36518), (589, 33976), (961, 20824), (1096, 18259), (1178, 16988), (1922, 10412), (2356, 8494), (2603, 7688), (3844, 5206), (4247, 4712)]