20199031880

素因数分解:

$2^3\times 5^1\times {\mathrm{504975797}}^1$

素因数の和:504975808

約数の個数: 16

約数和(自身を含む): 45447821820

約数和(自身を除く): 25248789940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504975797, 1009951594, 2019903188, 2524878985, 4039806376, 5049757970, 10099515940, 20199031880]

約数ペア:

[(1, 20199031880), (2, 10099515940), (4, 5049757970), (5, 4039806376), (8, 2524878985), (10, 2019903188), (20, 1009951594), (40, 504975797)]