20563947

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2269}}^1$

素因数の和:2347

約数の個数: 24

約数和(自身を含む): 31870800

約数和(自身を除く): 11306853

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2269, 3021, 6807, 9063, 20421, 43111, 120257, 129333, 360771, 387999, 1082313, 2284883, 6854649, 20563947]

約数ペア:

[(1, 20563947), (3, 6854649), (9, 2284883), (19, 1082313), (53, 387999), (57, 360771), (159, 129333), (171, 120257), (477, 43111), (1007, 20421), (2269, 9063), (3021, 6807)]