21971608

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{30859}}^1$

素因数の和:30954

約数の個数: 16

約数和(自身を含む): 41661000

約数和(自身を除く): 19689392

約数列:

[1, 2, 4, 8, 89, 178, 356, 712, 30859, 61718, 123436, 246872, 2746451, 5492902, 10985804, 21971608]

約数ペア:

[(1, 21971608), (2, 10985804), (4, 5492902), (8, 2746451), (89, 246872), (178, 123436), (356, 61718), (712, 30859)]