31999136

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:194

約数の個数: 72

約数和(自身を含む): 70050204

約数和(自身を除く): 38051068

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 97, 104, 122, 169, 194, 208, 244, 338, 388, 416, 488, 676, 776, 793, 976, 1261, 1352, 1552, 1586, 1952, 2522, 2704, 3104, 3172, 5044, 5408, 5917, 6344, 10088, 10309, 11834, 12688, 16393, 20176, 20618, 23668, 25376, 32786, 40352, 41236, 47336, 65572, 76921, 82472, 94672, 131144, 153842, 164944, 189344, 262288, 307684, 329888, 524576, 615368, 999973, 1230736, 1999946, 2461472, 3999892, 7999784, 15999568, 31999136]

約数ペア:

[(1, 31999136), (2, 15999568), (4, 7999784), (8, 3999892), (13, 2461472), (16, 1999946), (26, 1230736), (32, 999973), (52, 615368), (61, 524576), (97, 329888), (104, 307684), (122, 262288), (169, 189344), (194, 164944), (208, 153842), (244, 131144), (338, 94672), (388, 82472), (416, 76921), (488, 65572), (676, 47336), (776, 41236), (793, 40352), (976, 32786), (1261, 25376), (1352, 23668), (1552, 20618), (1586, 20176), (1952, 16393), (2522, 12688), (2704, 11834), (3104, 10309), (3172, 10088), (5044, 6344), (5408, 5917)]