21001885

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{1171}}^1$

素因数の和:1404

約数の個数: 16

約数和(自身を含む): 26834112

約数和(自身を除く): 5832227

約数列:

[1, 5, 17, 85, 211, 1055, 1171, 3587, 5855, 17935, 19907, 99535, 247081, 1235405, 4200377, 21001885]

約数ペア:

[(1, 21001885), (5, 4200377), (17, 1235405), (85, 247081), (211, 99535), (1055, 19907), (1171, 17935), (3587, 5855)]