81494360

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{6427}}^1$

素因数の和:6755

約数の個数: 32

約数和(自身を含む): 183969360

約数和(自身を除く): 102475000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2536, 3170, 6340, 6427, 12680, 12854, 25708, 32135, 51416, 64270, 128540, 257080, 2037359, 4074718, 8149436, 10186795, 16298872, 20373590, 40747180, 81494360]

約数ペア:

[(1, 81494360), (2, 40747180), (4, 20373590), (5, 16298872), (8, 10186795), (10, 8149436), (20, 4074718), (40, 2037359), (317, 257080), (634, 128540), (1268, 64270), (1585, 51416), (2536, 32135), (3170, 25708), (6340, 12854), (6427, 12680)]