67688020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{78707}}^1$

素因数の和:78759

約数の個数: 24

約数和(自身を含む): 145452384

約数和(自身を除く): 77764364

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 78707, 157414, 314828, 393535, 787070, 1574140, 3384401, 6768802, 13537604, 16922005, 33844010, 67688020]

約数ペア:

[(1, 67688020), (2, 33844010), (4, 16922005), (5, 13537604), (10, 6768802), (20, 3384401), (43, 1574140), (86, 787070), (172, 393535), (215, 314828), (430, 157414), (860, 78707)]