21720432

素因数分解:

$2^4\times 3^1\times {\mathrm{197}}^1\times {\mathrm{2297}}^1$

素因数の和:2505

約数の個数: 40

約数和(自身を含む): 56420496

約数和(自身を除く): 34700064

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 197, 394, 591, 788, 1182, 1576, 2297, 2364, 3152, 4594, 4728, 6891, 9188, 9456, 13782, 18376, 27564, 36752, 55128, 110256, 452509, 905018, 1357527, 1810036, 2715054, 3620072, 5430108, 7240144, 10860216, 21720432]

約数ペア:

[(1, 21720432), (2, 10860216), (3, 7240144), (4, 5430108), (6, 3620072), (8, 2715054), (12, 1810036), (16, 1357527), (24, 905018), (48, 452509), (197, 110256), (394, 55128), (591, 36752), (788, 27564), (1182, 18376), (1576, 13782), (2297, 9456), (2364, 9188), (3152, 6891), (4594, 4728)]