1689040

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 4026528

約数和(自身を除く): 2337488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 491, 688, 860, 982, 1720, 1964, 2455, 3440, 3928, 4910, 7856, 9820, 19640, 21113, 39280, 42226, 84452, 105565, 168904, 211130, 337808, 422260, 844520, 1689040]

約数ペア:

[(1, 1689040), (2, 844520), (4, 422260), (5, 337808), (8, 211130), (10, 168904), (16, 105565), (20, 84452), (40, 42226), (43, 39280), (80, 21113), (86, 19640), (172, 9820), (215, 7856), (344, 4910), (430, 3928), (491, 3440), (688, 2455), (860, 1964), (982, 1720)]