19982260

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12647}}^1$

素因数の和:12735

約数の個数: 24

約数和(自身を含む): 42497280

約数和(自身を除く): 22515020

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12647, 25294, 50588, 63235, 126470, 252940, 999113, 1998226, 3996452, 4995565, 9991130, 19982260]

約数ペア:

[(1, 19982260), (2, 9991130), (4, 4995565), (5, 3996452), (10, 1998226), (20, 999113), (79, 252940), (158, 126470), (316, 63235), (395, 50588), (790, 25294), (1580, 12647)]