278889117

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1\times {\mathrm{653}}^1$

素因数の和:949

約数の個数: 32

約数和(自身を含む): 411360768

約数和(自身を除く): 132471651

約数列:

[1, 3, 13, 39, 47, 141, 233, 611, 653, 699, 1833, 1959, 3029, 8489, 9087, 10951, 25467, 30691, 32853, 92073, 142363, 152149, 398983, 427089, 456447, 1196949, 1977937, 5933811, 7151003, 21453009, 92963039, 278889117]

約数ペア:

[(1, 278889117), (3, 92963039), (13, 21453009), (39, 7151003), (47, 5933811), (141, 1977937), (233, 1196949), (611, 456447), (653, 427089), (699, 398983), (1833, 152149), (1959, 142363), (3029, 92073), (8489, 32853), (9087, 30691), (10951, 25467)]