278486515

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{643}}^1$

素因数の和:811

約数の個数: 32

約数和(自身を含む): 363525120

約数和(自身を除く): 85038605

約数列:

[1, 5, 19, 47, 95, 97, 235, 485, 643, 893, 1843, 3215, 4465, 4559, 9215, 12217, 22795, 30221, 61085, 62371, 86621, 151105, 311855, 433105, 574199, 1185049, 2870995, 2931437, 5925245, 14657185, 55697303, 278486515]

約数ペア:

[(1, 278486515), (5, 55697303), (19, 14657185), (47, 5925245), (95, 2931437), (97, 2870995), (235, 1185049), (485, 574199), (643, 433105), (893, 311855), (1843, 151105), (3215, 86621), (4465, 62371), (4559, 61085), (9215, 30221), (12217, 22795)]