78767720

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{7109}}^1$

素因数の和:7397

約数の個数: 32

約数和(自身を含む): 177892200

約数和(自身を除く): 99124480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 7109, 11080, 14218, 28436, 35545, 56872, 71090, 142180, 284360, 1969193, 3938386, 7876772, 9845965, 15753544, 19691930, 39383860, 78767720]

約数ペア:

[(1, 78767720), (2, 39383860), (4, 19691930), (5, 15753544), (8, 9845965), (10, 7876772), (20, 3938386), (40, 1969193), (277, 284360), (554, 142180), (1108, 71090), (1385, 56872), (2216, 35545), (2770, 28436), (5540, 14218), (7109, 11080)]