81889028

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{691}}^1$

素因数の和:804

約数の個数: 48

約数和(自身を含む): 161130816

約数和(自身を除く): 79241788

約数列:

[1, 2, 4, 13, 26, 43, 52, 53, 86, 106, 172, 212, 559, 689, 691, 1118, 1378, 1382, 2236, 2279, 2756, 2764, 4558, 8983, 9116, 17966, 29627, 29713, 35932, 36623, 59254, 59426, 73246, 118508, 118852, 146492, 386269, 476099, 772538, 952198, 1545076, 1574789, 1904396, 3149578, 6299156, 20472257, 40944514, 81889028]

約数ペア:

[(1, 81889028), (2, 40944514), (4, 20472257), (13, 6299156), (26, 3149578), (43, 1904396), (52, 1574789), (53, 1545076), (86, 952198), (106, 772538), (172, 476099), (212, 386269), (559, 146492), (689, 118852), (691, 118508), (1118, 73246), (1378, 59426), (1382, 59254), (2236, 36623), (2279, 35932), (2756, 29713), (2764, 29627), (4558, 17966), (8983, 9116)]