399128492

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{102551}}^1$

素因数の和:102701

約数の個数: 24

約数和(自身を含む): 804007680

約数和(自身を除く): 404879188

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 102551, 205102, 410204, 717857, 1435714, 2871428, 14254589, 28509178, 57018356, 99782123, 199564246, 399128492]

約数ペア:

[(1, 399128492), (2, 199564246), (4, 99782123), (7, 57018356), (14, 28509178), (28, 14254589), (139, 2871428), (278, 1435714), (556, 717857), (973, 410204), (1946, 205102), (3892, 102551)]