21143087

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1399}}^1$

素因数の和:1550

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 4661713

約数列:

[1, 7, 17, 119, 127, 889, 1399, 2159, 9793, 15113, 23783, 166481, 177673, 1243711, 3020441, 21143087]

約数ペア:

[(1, 21143087), (7, 3020441), (17, 1243711), (119, 177673), (127, 166481), (889, 23783), (1399, 15113), (2159, 9793)]