21804999

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 32212224

約数和(自身を除く): 10407225

約数列:

[1, 3, 17, 43, 51, 61, 129, 163, 183, 489, 731, 1037, 2193, 2623, 2771, 3111, 7009, 7869, 8313, 9943, 21027, 29829, 44591, 119153, 133773, 169031, 357459, 427549, 507093, 1282647, 7268333, 21804999]

約数ペア:

[(1, 21804999), (3, 7268333), (17, 1282647), (43, 507093), (51, 427549), (61, 357459), (129, 169031), (163, 133773), (183, 119153), (489, 44591), (731, 29829), (1037, 21027), (2193, 9943), (2623, 8313), (2771, 7869), (3111, 7009)]