81531128

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:197

約数の個数: 96

約数和(自身を含む): 191109600

約数和(自身を除く): 109578472

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 37, 38, 56, 74, 76, 109, 133, 148, 152, 218, 259, 266, 296, 361, 436, 518, 532, 703, 722, 763, 872, 1036, 1064, 1406, 1444, 1526, 2071, 2072, 2527, 2812, 2888, 3052, 4033, 4142, 4921, 5054, 5624, 6104, 8066, 8284, 9842, 10108, 13357, 14497, 16132, 16568, 19684, 20216, 26714, 28231, 28994, 32264, 39349, 39368, 53428, 56462, 57988, 76627, 78698, 93499, 106856, 112924, 115976, 153254, 157396, 186998, 225848, 275443, 306508, 314792, 373996, 536389, 550886, 613016, 747992, 1072778, 1101772, 1455913, 2145556, 2203544, 2911826, 4291112, 5823652, 10191391, 11647304, 20382782, 40765564, 81531128]

約数ペア:

[(1, 81531128), (2, 40765564), (4, 20382782), (7, 11647304), (8, 10191391), (14, 5823652), (19, 4291112), (28, 2911826), (37, 2203544), (38, 2145556), (56, 1455913), (74, 1101772), (76, 1072778), (109, 747992), (133, 613016), (148, 550886), (152, 536389), (218, 373996), (259, 314792), (266, 306508), (296, 275443), (361, 225848), (436, 186998), (518, 157396), (532, 153254), (703, 115976), (722, 112924), (763, 106856), (872, 93499), (1036, 78698), (1064, 76627), (1406, 57988), (1444, 56462), (1526, 53428), (2071, 39368), (2072, 39349), (2527, 32264), (2812, 28994), (2888, 28231), (3052, 26714), (4033, 20216), (4142, 19684), (4921, 16568), (5054, 16132), (5624, 14497), (6104, 13357), (8066, 10108), (8284, 9842)]