131313040

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{3343}}^1$

素因数の和:3847

約数の個数: 40

約数和(自身を含む): 306016128

約数和(自身を除く): 174703088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1964, 2455, 3343, 3928, 4910, 6686, 7856, 9820, 13372, 16715, 19640, 26744, 33430, 39280, 53488, 66860, 133720, 267440, 1641413, 3282826, 6565652, 8207065, 13131304, 16414130, 26262608, 32828260, 65656520, 131313040]

約数ペア:

[(1, 131313040), (2, 65656520), (4, 32828260), (5, 26262608), (8, 16414130), (10, 13131304), (16, 8207065), (20, 6565652), (40, 3282826), (80, 1641413), (491, 267440), (982, 133720), (1964, 66860), (2455, 53488), (3343, 39280), (3928, 33430), (4910, 26744), (6686, 19640), (7856, 16715), (9820, 13372)]