79899970

素因数分解:

$2^1\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{4001}}^1$

素因数の和:6005

約数の個数: 16

約数和(自身を含む): 143927928

約数和(自身を除く): 64027958

約数列:

[1, 2, 5, 10, 1997, 3994, 4001, 8002, 9985, 19970, 20005, 40010, 7989997, 15979994, 39949985, 79899970]

約数ペア:

[(1, 79899970), (2, 39949985), (5, 15979994), (10, 7989997), (1997, 40010), (3994, 20005), (4001, 19970), (8002, 9985)]