78615880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{280771}}^1$

素因数の和:280789

約数の個数: 32

約数和(自身を含む): 202155840

約数和(自身を除く): 123539960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 280771, 561542, 1123084, 1403855, 1965397, 2246168, 2807710, 3930794, 5615420, 7861588, 9826985, 11230840, 15723176, 19653970, 39307940, 78615880]

約数ペア:

[(1, 78615880), (2, 39307940), (4, 19653970), (5, 15723176), (7, 11230840), (8, 9826985), (10, 7861588), (14, 5615420), (20, 3930794), (28, 2807710), (35, 2246168), (40, 1965397), (56, 1403855), (70, 1123084), (140, 561542), (280, 280771)]