21969339

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{55061}}^1$

素因数の和:55090

約数の個数: 16

約数和(自身を含む): 35239680

約数和(自身を除く): 13270341

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 55061, 165183, 385427, 1046159, 1156281, 3138477, 7323113, 21969339]

約数ペア:

[(1, 21969339), (3, 7323113), (7, 3138477), (19, 1156281), (21, 1046159), (57, 385427), (133, 165183), (399, 55061)]