278843287940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1991737771}}^1$

素因数の和:1991737787

約数の個数: 24

約数和(自身を含む): 669223891392

約数和(自身を除く): 390380603452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1991737771, 3983475542, 7966951084, 9958688855, 13942164397, 19917377710, 27884328794, 39834755420, 55768657588, 69710821985, 139421643970, 278843287940]

約数ペア:

[(1, 278843287940), (2, 139421643970), (4, 69710821985), (5, 55768657588), (7, 39834755420), (10, 27884328794), (14, 19917377710), (20, 13942164397), (28, 9958688855), (35, 7966951084), (70, 3983475542), (140, 1991737771)]