219817725

素因数分解:

$3^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{17981}}^1$

素因数の和:18157

約数の個数: 24

約数和(自身を含む): 365681952

約数和(自身を除く): 145864227

約数列:

[1, 3, 5, 15, 25, 75, 163, 489, 815, 2445, 4075, 12225, 17981, 53943, 89905, 269715, 449525, 1348575, 2930903, 8792709, 14654515, 43963545, 73272575, 219817725]

約数ペア:

[(1, 219817725), (3, 73272575), (5, 43963545), (15, 14654515), (25, 8792709), (75, 2930903), (163, 1348575), (489, 449525), (815, 269715), (2445, 89905), (4075, 53943), (12225, 17981)]