20393060

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12907}}^1$

素因数の和:12995

約数の個数: 24

約数和(自身を含む): 43370880

約数和(自身を除く): 22977820

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12907, 25814, 51628, 64535, 129070, 258140, 1019653, 2039306, 4078612, 5098265, 10196530, 20393060]

約数ペア:

[(1, 20393060), (2, 10196530), (4, 5098265), (5, 4078612), (10, 2039306), (20, 1019653), (79, 258140), (158, 129070), (316, 64535), (395, 51628), (790, 25814), (1580, 12907)]