278350779

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{14843}}^1$

素因数の和:14919

約数の個数: 32

約数和(自身を含む): 456007680

約数和(自身を除く): 177656901

約数列:

[1, 3, 7, 19, 21, 47, 57, 133, 141, 329, 399, 893, 987, 2679, 6251, 14843, 18753, 44529, 103901, 282017, 311703, 697621, 846051, 1974119, 2092863, 4883347, 5922357, 13254799, 14650041, 39764397, 92783593, 278350779]

約数ペア:

[(1, 278350779), (3, 92783593), (7, 39764397), (19, 14650041), (21, 13254799), (47, 5922357), (57, 4883347), (133, 2092863), (141, 1974119), (329, 846051), (399, 697621), (893, 311703), (987, 282017), (2679, 103901), (6251, 44529), (14843, 18753)]