20138950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{30983}}^1$

素因数の和:31008

約数の個数: 24

約数和(自身を含む): 40341168

約数和(自身を除く): 20202218

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 30983, 61966, 154915, 309830, 402779, 774575, 805558, 1549150, 2013895, 4027790, 10069475, 20138950]

約数ペア:

[(1, 20138950), (2, 10069475), (5, 4027790), (10, 2013895), (13, 1549150), (25, 805558), (26, 774575), (50, 402779), (65, 309830), (130, 154915), (325, 61966), (650, 30983)]