6640025

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1997}}^1$

素因数の和:2033

約数の個数: 24

約数和(自身を含む): 9910080

約数和(自身を除く): 3270055

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 1997, 3325, 9985, 13979, 37943, 49925, 69895, 189715, 265601, 349475, 948575, 1328005, 6640025]

約数ペア:

[(1, 6640025), (5, 1328005), (7, 948575), (19, 349475), (25, 265601), (35, 189715), (95, 69895), (133, 49925), (175, 37943), (475, 13979), (665, 9985), (1997, 3325)]