81156656

素因数分解:

$2^4\times 7^1\times {\mathrm{167}}^1\times {\mathrm{4339}}^1$

素因数の和:4521

約数の個数: 40

約数和(自身を含む): 180821760

約数和(自身を除く): 99665104

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 167, 334, 668, 1169, 1336, 2338, 2672, 4339, 4676, 8678, 9352, 17356, 18704, 30373, 34712, 60746, 69424, 121492, 242984, 485968, 724613, 1449226, 2898452, 5072291, 5796904, 10144582, 11593808, 20289164, 40578328, 81156656]

約数ペア:

[(1, 81156656), (2, 40578328), (4, 20289164), (7, 11593808), (8, 10144582), (14, 5796904), (16, 5072291), (28, 2898452), (56, 1449226), (112, 724613), (167, 485968), (334, 242984), (668, 121492), (1169, 69424), (1336, 60746), (2338, 34712), (2672, 30373), (4339, 18704), (4676, 17356), (8678, 9352)]