81905504

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1259}}^1$

素因数の和:1395

約数の個数: 48

約数和(自身を含む): 171460800

約数和(自身を除く): 89555296

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 107, 152, 214, 304, 428, 608, 856, 1259, 1712, 2033, 2518, 3424, 4066, 5036, 8132, 10072, 16264, 20144, 23921, 32528, 40288, 47842, 65056, 95684, 134713, 191368, 269426, 382736, 538852, 765472, 1077704, 2155408, 2559547, 4310816, 5119094, 10238188, 20476376, 40952752, 81905504]

約数ペア:

[(1, 81905504), (2, 40952752), (4, 20476376), (8, 10238188), (16, 5119094), (19, 4310816), (32, 2559547), (38, 2155408), (76, 1077704), (107, 765472), (152, 538852), (214, 382736), (304, 269426), (428, 191368), (608, 134713), (856, 95684), (1259, 65056), (1712, 47842), (2033, 40288), (2518, 32528), (3424, 23921), (4066, 20144), (5036, 16264), (8132, 10072)]