20720564

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{4621}}^1$

素因数の和:4703

約数の個数: 24

約数和(自身を含む): 38824800

約数和(自身を除く): 18104236

約数列:

[1, 2, 4, 19, 38, 59, 76, 118, 236, 1121, 2242, 4484, 4621, 9242, 18484, 87799, 175598, 272639, 351196, 545278, 1090556, 5180141, 10360282, 20720564]

約数ペア:

[(1, 20720564), (2, 10360282), (4, 5180141), (19, 1090556), (38, 545278), (59, 351196), (76, 272639), (118, 175598), (236, 87799), (1121, 18484), (2242, 9242), (4484, 4621)]