278327007

素因数分解:

$3^2\times 7^3\times {\mathrm{29}}^1\times {\mathrm{3109}}^1$

素因数の和:3165

約数の個数: 48

約数和(自身を含む): 485160000

約数和(自身を除く): 206832993

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 343, 441, 609, 1029, 1421, 1827, 3087, 3109, 4263, 9327, 9947, 12789, 21763, 27981, 29841, 65289, 89523, 90161, 152341, 195867, 270483, 457023, 631127, 811449, 1066387, 1371069, 1893381, 3199161, 4417889, 5680143, 9597483, 13253667, 30925223, 39761001, 92775669, 278327007]

約数ペア:

[(1, 278327007), (3, 92775669), (7, 39761001), (9, 30925223), (21, 13253667), (29, 9597483), (49, 5680143), (63, 4417889), (87, 3199161), (147, 1893381), (203, 1371069), (261, 1066387), (343, 811449), (441, 631127), (609, 457023), (1029, 270483), (1421, 195867), (1827, 152341), (3087, 90161), (3109, 89523), (4263, 65289), (9327, 29841), (9947, 27981), (12789, 21763)]