21508072

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{40127}}^1$

素因数の和:40200

約数の個数: 16

約数和(自身を含む): 40930560

約数和(自身を除く): 19422488

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 40127, 80254, 160508, 321016, 2688509, 5377018, 10754036, 21508072]

約数ペア:

[(1, 21508072), (2, 10754036), (4, 5377018), (8, 2688509), (67, 321016), (134, 160508), (268, 80254), (536, 40127)]