21640542021

素因数分解:

$3^2\times 7^1\times {\mathrm{1399}}^1\times {\mathrm{245533}}^1$

素因数の和:246945

約数の個数: 24

約数和(自身を含む): 35749750400

約数和(自身を除く): 14109208379

約数列:

[1, 3, 7, 9, 21, 63, 1399, 4197, 9793, 12591, 29379, 88137, 245533, 736599, 1718731, 2209797, 5156193, 15468579, 343500667, 1030502001, 2404504669, 3091506003, 7213514007, 21640542021]

約数ペア:

[(1, 21640542021), (3, 7213514007), (7, 3091506003), (9, 2404504669), (21, 1030502001), (63, 343500667), (1399, 15468579), (4197, 5156193), (9793, 2209797), (12591, 1718731), (29379, 736599), (88137, 245533)]