20690332

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:398

約数の個数: 36

約数和(自身を含む): 39680256

約数和(自身を除く): 18989924

約数列:

[1, 2, 4, 13, 26, 52, 127, 169, 241, 254, 338, 482, 508, 676, 964, 1651, 3133, 3302, 6266, 6604, 12532, 21463, 30607, 40729, 42926, 61214, 81458, 85852, 122428, 162916, 397891, 795782, 1591564, 5172583, 10345166, 20690332]

約数ペア:

[(1, 20690332), (2, 10345166), (4, 5172583), (13, 1591564), (26, 795782), (52, 397891), (127, 162916), (169, 122428), (241, 85852), (254, 81458), (338, 61214), (482, 42926), (508, 40729), (676, 30607), (964, 21463), (1651, 12532), (3133, 6604), (3302, 6266)]