21357273

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53527}}^1$

素因数の和:53556

約数の個数: 16

約数和(自身を含む): 34257920

約数和(自身を除く): 12900647

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53527, 160581, 374689, 1017013, 1124067, 3051039, 7119091, 21357273]

約数ペア:

[(1, 21357273), (3, 7119091), (7, 3051039), (19, 1124067), (21, 1017013), (57, 374689), (133, 160581), (399, 53527)]