20971550

素因数分解:

$2^1\times 5^2\times {\mathrm{59}}^1\times {\mathrm{7109}}^1$

素因数の和:7180

約数の個数: 24

約数和(自身を含む): 39673800

約数和(自身を除く): 18702250

約数列:

[1, 2, 5, 10, 25, 50, 59, 118, 295, 590, 1475, 2950, 7109, 14218, 35545, 71090, 177725, 355450, 419431, 838862, 2097155, 4194310, 10485775, 20971550]

約数ペア:

[(1, 20971550), (2, 10485775), (5, 4194310), (10, 2097155), (25, 838862), (50, 419431), (59, 355450), (118, 177725), (295, 71090), (590, 35545), (1475, 14218), (2950, 7109)]