21545406

素因数分解:

$2^1\times 3^3\times {\mathrm{398989}}^1$

素因数の和:399000

約数の個数: 16

約数和(自身を含む): 47878800

約数和(自身を除く): 26333394

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 398989, 797978, 1196967, 2393934, 3590901, 7181802, 10772703, 21545406]

約数ペア:

[(1, 21545406), (2, 10772703), (3, 7181802), (6, 3590901), (9, 2393934), (18, 1196967), (27, 797978), (54, 398989)]