21031879

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{977}}^1$

素因数の和:1110

約数の個数: 16

約数和(自身を含む): 24410880

約数和(自身を除く): 3379001

約数列:

[1, 11, 19, 103, 209, 977, 1133, 1957, 10747, 18563, 21527, 100631, 204193, 1106941, 1911989, 21031879]

約数ペア:

[(1, 21031879), (11, 1911989), (19, 1106941), (103, 204193), (209, 100631), (977, 21527), (1133, 18563), (1957, 10747)]