20396005

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 31026240

約数和(自身を除く): 10630235

約数列:

[1, 5, 7, 17, 35, 49, 59, 83, 85, 119, 245, 295, 413, 415, 581, 595, 833, 1003, 1411, 2065, 2891, 2905, 4067, 4165, 4897, 5015, 7021, 7055, 9877, 14455, 20335, 24485, 34279, 35105, 49147, 49385, 69139, 83249, 171395, 239953, 245735, 345695, 416245, 582743, 1199765, 2913715, 4079201, 20396005]

約数ペア:

[(1, 20396005), (5, 4079201), (7, 2913715), (17, 1199765), (35, 582743), (49, 416245), (59, 345695), (83, 245735), (85, 239953), (119, 171395), (245, 83249), (295, 69139), (413, 49385), (415, 49147), (581, 35105), (595, 34279), (833, 24485), (1003, 20335), (1411, 14455), (2065, 9877), (2891, 7055), (2905, 7021), (4067, 5015), (4165, 4897)]