78870640

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4421}}^1$

素因数の和:4657

約数の個数: 40

約数和(自身を含む): 184238208

約数和(自身を除く): 105367568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4421, 4460, 8842, 8920, 17684, 17840, 22105, 35368, 44210, 70736, 88420, 176840, 353680, 985883, 1971766, 3943532, 4929415, 7887064, 9858830, 15774128, 19717660, 39435320, 78870640]

約数ペア:

[(1, 78870640), (2, 39435320), (4, 19717660), (5, 15774128), (8, 9858830), (10, 7887064), (16, 4929415), (20, 3943532), (40, 1971766), (80, 985883), (223, 353680), (446, 176840), (892, 88420), (1115, 70736), (1784, 44210), (2230, 35368), (3568, 22105), (4421, 17840), (4460, 17684), (8842, 8920)]