20396170

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1350

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 18483830

約数列:

[1, 2, 5, 10, 23, 46, 71, 115, 142, 230, 355, 710, 1249, 1633, 2498, 3266, 6245, 8165, 12490, 16330, 28727, 57454, 88679, 143635, 177358, 287270, 443395, 886790, 2039617, 4079234, 10198085, 20396170]

約数ペア:

[(1, 20396170), (2, 10198085), (5, 4079234), (10, 2039617), (23, 886790), (46, 443395), (71, 287270), (115, 177358), (142, 143635), (230, 88679), (355, 57454), (710, 28727), (1249, 16330), (1633, 12490), (2498, 8165), (3266, 6245)]