31206820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{277}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 67814208

約数和(自身を除く): 36607388

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 131, 172, 215, 262, 277, 430, 524, 554, 655, 860, 1108, 1310, 1385, 2620, 2770, 5540, 5633, 11266, 11911, 22532, 23822, 28165, 36287, 47644, 56330, 59555, 72574, 112660, 119110, 145148, 181435, 238220, 362870, 725740, 1560341, 3120682, 6241364, 7801705, 15603410, 31206820]

約数ペア:

[(1, 31206820), (2, 15603410), (4, 7801705), (5, 6241364), (10, 3120682), (20, 1560341), (43, 725740), (86, 362870), (131, 238220), (172, 181435), (215, 145148), (262, 119110), (277, 112660), (430, 72574), (524, 59555), (554, 56330), (655, 47644), (860, 36287), (1108, 28165), (1310, 23822), (1385, 22532), (2620, 11911), (2770, 11266), (5540, 5633)]