20997553916

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{577}}^1\times {\mathrm{1321}}^1$

素因数の和:2070

約数の個数: 48

約数和(自身を含む): 37741217472

約数和(自身を除く): 16743663556

約数列:

[1, 2, 4, 71, 97, 142, 194, 284, 388, 577, 1154, 1321, 2308, 2642, 5284, 6887, 13774, 27548, 40967, 55969, 81934, 93791, 111938, 128137, 163868, 187582, 223876, 256274, 375164, 512548, 762217, 1524434, 3048868, 3973799, 7947598, 9097727, 15895196, 18195454, 36390908, 54117407, 73935049, 108234814, 147870098, 216469628, 295740196, 5249388479, 10498776958, 20997553916]

約数ペア:

[(1, 20997553916), (2, 10498776958), (4, 5249388479), (71, 295740196), (97, 216469628), (142, 147870098), (194, 108234814), (284, 73935049), (388, 54117407), (577, 36390908), (1154, 18195454), (1321, 15895196), (2308, 9097727), (2642, 7947598), (5284, 3973799), (6887, 3048868), (13774, 1524434), (27548, 762217), (40967, 512548), (55969, 375164), (81934, 256274), (93791, 223876), (111938, 187582), (128137, 163868)]