20709085

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 27666432

約数和(自身を除く): 6957347

約数列:

[1, 5, 23, 31, 37, 115, 155, 157, 185, 713, 785, 851, 1147, 3565, 3611, 4255, 4867, 5735, 5809, 18055, 24335, 26381, 29045, 111941, 131905, 133607, 180079, 559705, 668035, 900395, 4141817, 20709085]

約数ペア:

[(1, 20709085), (5, 4141817), (23, 900395), (31, 668035), (37, 559705), (115, 180079), (155, 133607), (157, 131905), (185, 111941), (713, 29045), (785, 26381), (851, 24335), (1147, 18055), (3565, 5809), (3611, 5735), (4255, 4867)]