21677689

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:205

約数の個数: 24

約数和(自身を含む): 25676352

約数和(自身を除く): 3998663

約数列:

[1, 11, 19, 53, 103, 209, 361, 583, 1007, 1133, 1957, 3971, 5459, 11077, 19133, 21527, 37183, 60049, 103721, 210463, 409013, 1140931, 1970699, 21677689]

約数ペア:

[(1, 21677689), (11, 1970699), (19, 1140931), (53, 409013), (103, 210463), (209, 103721), (361, 60049), (583, 37183), (1007, 21527), (1133, 19133), (1957, 11077), (3971, 5459)]