21881635

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{797}}^1$

素因数の和:855

約数の個数: 24

約数和(自身を含む): 29398320

約数和(自身を除く): 7516685

約数列:

[1, 5, 17, 19, 85, 95, 289, 323, 797, 1445, 1615, 3985, 5491, 13549, 15143, 27455, 67745, 75715, 230333, 257431, 1151665, 1287155, 4376327, 21881635]

約数ペア:

[(1, 21881635), (5, 4376327), (17, 1287155), (19, 1151665), (85, 257431), (95, 230333), (289, 75715), (323, 67745), (797, 27455), (1445, 15143), (1615, 13549), (3985, 5491)]