20905149

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 29870400

約数和(自身を除く): 8965251

約数列:

[1, 3, 19, 57, 97, 199, 291, 361, 597, 1083, 1843, 3781, 5529, 11343, 19303, 35017, 57909, 71839, 105051, 215517, 366757, 1100271, 6968383, 20905149]

約数ペア:

[(1, 20905149), (3, 6968383), (19, 1100271), (57, 366757), (97, 215517), (199, 105051), (291, 71839), (361, 57909), (597, 35017), (1083, 19303), (1843, 11343), (3781, 5529)]