289809940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2070071}}^1$

素因数の和:2070087

約数の個数: 24

約数和(自身を含む): 695544192

約数和(自身を除く): 405734252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2070071, 4140142, 8280284, 10350355, 14490497, 20700710, 28980994, 41401420, 57961988, 72452485, 144904970, 289809940]

約数ペア:

[(1, 289809940), (2, 144904970), (4, 72452485), (5, 57961988), (7, 41401420), (10, 28980994), (14, 20700710), (20, 14490497), (28, 10350355), (35, 8280284), (70, 4140142), (140, 2070071)]