279040360

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{6997}}^1$

素因数の和:8005

約数の個数: 32

約数和(自身を含む): 628560360

約数和(自身を除く): 349520000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 3988, 4985, 6997, 7976, 9970, 13994, 19940, 27988, 34985, 39880, 55976, 69970, 139940, 279880, 6976009, 13952018, 27904036, 34880045, 55808072, 69760090, 139520180, 279040360]

約数ペア:

[(1, 279040360), (2, 139520180), (4, 69760090), (5, 55808072), (8, 34880045), (10, 27904036), (20, 13952018), (40, 6976009), (997, 279880), (1994, 139940), (3988, 69970), (4985, 55976), (6997, 39880), (7976, 34985), (9970, 27988), (13994, 19940)]