21273940

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2423}}^1$

素因数の和:2871

約数の個数: 24

約数和(自身を含む): 44795520

約数和(自身を除く): 23521580

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 2423, 4390, 4846, 8780, 9692, 12115, 24230, 48460, 1063697, 2127394, 4254788, 5318485, 10636970, 21273940]

約数ペア:

[(1, 21273940), (2, 10636970), (4, 5318485), (5, 4254788), (10, 2127394), (20, 1063697), (439, 48460), (878, 24230), (1756, 12115), (2195, 9692), (2423, 8780), (4390, 4846)]