287240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 665280

約数和(自身を除く): 378040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 167, 172, 215, 334, 344, 430, 668, 835, 860, 1336, 1670, 1720, 3340, 6680, 7181, 14362, 28724, 35905, 57448, 71810, 143620, 287240]

約数ペア:

[(1, 287240), (2, 143620), (4, 71810), (5, 57448), (8, 35905), (10, 28724), (20, 14362), (40, 7181), (43, 6680), (86, 3340), (167, 1720), (172, 1670), (215, 1336), (334, 860), (344, 835), (430, 668)]