821889

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:149

約数の個数: 24

約数和(自身を含む): 1272960

約数和(自身を除く): 451071

約数列:

[1, 3, 9, 29, 47, 67, 87, 141, 201, 261, 423, 603, 1363, 1943, 3149, 4089, 5829, 9447, 12267, 17487, 28341, 91321, 273963, 821889]

約数ペア:

[(1, 821889), (3, 273963), (9, 91321), (29, 28341), (47, 17487), (67, 12267), (87, 9447), (141, 5829), (201, 4089), (261, 3149), (423, 1943), (603, 1363)]