278318012

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{139999}}^1$

素因数の和:140081

約数の個数: 24

約数和(自身を含む): 564480000

約数和(自身を除く): 286161988

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 139999, 279998, 559996, 979993, 1959986, 3919972, 9939929, 19879858, 39759716, 69579503, 139159006, 278318012]

約数ペア:

[(1, 278318012), (2, 139159006), (4, 69579503), (7, 39759716), (14, 19879858), (28, 9939929), (71, 3919972), (142, 1959986), (284, 979993), (497, 559996), (994, 279998), (1988, 139999)]