21502471

素因数分解:

${\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:366

約数の個数: 16

約数和(自身を含む): 23379840

約数和(自身を除く): 1877369

約数列:

[1, 19, 53, 131, 163, 1007, 2489, 3097, 6943, 8639, 21353, 131917, 164141, 405707, 1131709, 21502471]

約数ペア:

[(1, 21502471), (19, 1131709), (53, 405707), (131, 164141), (163, 131917), (1007, 21353), (2489, 8639), (3097, 6943)]