31240781

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 39626496

約数和(自身を除く): 8385715

約数列:

[1, 11, 13, 17, 71, 143, 181, 187, 221, 781, 923, 1207, 1991, 2353, 2431, 3077, 10153, 12851, 13277, 15691, 25883, 33847, 40001, 141361, 167063, 172601, 218467, 440011, 1837693, 2403137, 2840071, 31240781]

約数ペア:

[(1, 31240781), (11, 2840071), (13, 2403137), (17, 1837693), (71, 440011), (143, 218467), (181, 172601), (187, 167063), (221, 141361), (781, 40001), (923, 33847), (1207, 25883), (1991, 15691), (2353, 13277), (2431, 12851), (3077, 10153)]