20213758

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{1021}}^1$

素因数の和:1563

約数の個数: 16

約数和(自身を含む): 32009040

約数和(自身を除く): 11795282

約数列:

[1, 2, 19, 38, 521, 1021, 1042, 2042, 9899, 19399, 19798, 38798, 531941, 1063882, 10106879, 20213758]

約数ペア:

[(1, 20213758), (2, 10106879), (19, 1063882), (38, 531941), (521, 38798), (1021, 19798), (1042, 19399), (2042, 9899)]