21528957

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 30748224

約数和(自身を除く): 9219267

約数列:

[1, 3, 19, 57, 103, 193, 309, 361, 579, 1083, 1957, 3667, 5871, 11001, 19879, 37183, 59637, 69673, 111549, 209019, 377701, 1133103, 7176319, 21528957]

約数ペア:

[(1, 21528957), (3, 7176319), (19, 1133103), (57, 377701), (103, 209019), (193, 111549), (309, 69673), (361, 59637), (579, 37183), (1083, 19879), (1957, 11001), (3667, 5871)]