21533620

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1933}}^1$

素因数の和:2499

約数の個数: 24

約数和(自身を含む): 45325224

約数和(自身を除く): 23791604

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 1933, 2228, 2785, 3866, 5570, 7732, 9665, 11140, 19330, 38660, 1076681, 2153362, 4306724, 5383405, 10766810, 21533620]

約数ペア:

[(1, 21533620), (2, 10766810), (4, 5383405), (5, 4306724), (10, 2153362), (20, 1076681), (557, 38660), (1114, 19330), (1933, 11140), (2228, 9665), (2785, 7732), (3866, 5570)]