81721816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{4091}}^1$

素因数の和:4335

約数の個数: 32

約数和(自身を含む): 167935680

約数和(自身を除く): 86213864

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 227, 454, 908, 1816, 2497, 4091, 4994, 8182, 9988, 16364, 19976, 32728, 45001, 90002, 180004, 360008, 928657, 1857314, 3714628, 7429256, 10215227, 20430454, 40860908, 81721816]

約数ペア:

[(1, 81721816), (2, 40860908), (4, 20430454), (8, 10215227), (11, 7429256), (22, 3714628), (44, 1857314), (88, 928657), (227, 360008), (454, 180004), (908, 90002), (1816, 45001), (2497, 32728), (4091, 19976), (4994, 16364), (8182, 9988)]