21075652

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31177}}^1$

素因数の和:31207

約数の個数: 18

約数和(自身を含む): 39939018

約数和(自身を除く): 18863366

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31177, 62354, 124708, 405301, 810602, 1621204, 5268913, 10537826, 21075652]

約数ペア:

[(1, 21075652), (2, 10537826), (4, 5268913), (13, 1621204), (26, 810602), (52, 405301), (169, 124708), (338, 62354), (676, 31177)]