20457950

素因数分解:

$2^1\times 5^2\times {\mathrm{619}}^1\times {\mathrm{661}}^1$

素因数の和:1292

約数の個数: 24

約数和(自身を含む): 38170920

約数和(自身を除く): 17712970

約数列:

[1, 2, 5, 10, 25, 50, 619, 661, 1238, 1322, 3095, 3305, 6190, 6610, 15475, 16525, 30950, 33050, 409159, 818318, 2045795, 4091590, 10228975, 20457950]

約数ペア:

[(1, 20457950), (2, 10228975), (5, 4091590), (10, 2045795), (25, 818318), (50, 409159), (619, 33050), (661, 30950), (1238, 16525), (1322, 15475), (3095, 6610), (3305, 6190)]