21961954

素因数分解:

$2^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{7963}}^1$

素因数の和:8169

約数の個数: 16

約数和(自身を含む): 37844928

約数和(自身を除く): 15882974

約数列:

[1, 2, 7, 14, 197, 394, 1379, 2758, 7963, 15926, 55741, 111482, 1568711, 3137422, 10980977, 21961954]

約数ペア:

[(1, 21961954), (2, 10980977), (7, 3137422), (14, 1568711), (197, 111482), (394, 55741), (1379, 15926), (2758, 7963)]