81409718

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{739}}^1$

素因数の和:996

約数の個数: 32

約数和(自身を含む): 139238400

約数和(自身を除く): 57828682

約数列:

[1, 2, 13, 19, 26, 38, 223, 247, 446, 494, 739, 1478, 2899, 4237, 5798, 8474, 9607, 14041, 19214, 28082, 55081, 110162, 164797, 182533, 329594, 365066, 2142361, 3131143, 4284722, 6262286, 40704859, 81409718]

約数ペア:

[(1, 81409718), (2, 40704859), (13, 6262286), (19, 4284722), (26, 3131143), (38, 2142361), (223, 365066), (247, 329594), (446, 182533), (494, 164797), (739, 110162), (1478, 55081), (2899, 28082), (4237, 19214), (5798, 14041), (8474, 9607)]