21980988

素因数分解:

$2^2\times 3^2\times {\mathrm{610583}}^1$

素因数の和:610593

約数の個数: 18

約数和(自身を含む): 55563144

約数和(自身を除く): 33582156

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 610583, 1221166, 1831749, 2442332, 3663498, 5495247, 7326996, 10990494, 21980988]

約数ペア:

[(1, 21980988), (2, 10990494), (3, 7326996), (4, 5495247), (6, 3663498), (9, 2442332), (12, 1831749), (18, 1221166), (36, 610583)]