21039895.0000000000

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{461}}^1\times {\mathrm{54331}}^1$

素因数の和:54865

約数の個数: 16

約数和(自身を含む): 5421898944

約数和(自身を除く): 1865283022

約数列:

[1, 2, 71, 142, 461, 922, 32731, 54331, 65462, 108662, 3857501, 7715002, 25046591, 50093182, 1778307961, 3556615922]

約数ペア:

[(1, 3556615922), (2, 1778307961), (71, 50093182), (142, 25046591), (461, 7715002), (922, 3857501), (32731, 108662), (54331, 65462)]