21814780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83903}}^1$

素因数の和:83925

約数の個数: 24

約数和(自身を含む): 49335552

約数和(自身を除く): 27520772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83903, 167806, 335612, 419515, 839030, 1090739, 1678060, 2181478, 4362956, 5453695, 10907390, 21814780]

約数ペア:

[(1, 21814780), (2, 10907390), (4, 5453695), (5, 4362956), (10, 2181478), (13, 1678060), (20, 1090739), (26, 839030), (52, 419515), (65, 335612), (130, 167806), (260, 83903)]