20488924

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:837

約数の個数: 24

約数和(自身を含む): 36778896

約数和(自身を除く): 16289972

約数列:

[1, 2, 4, 61, 122, 131, 244, 262, 524, 641, 1282, 2564, 7991, 15982, 31964, 39101, 78202, 83971, 156404, 167942, 335884, 5122231, 10244462, 20488924]

約数ペア:

[(1, 20488924), (2, 10244462), (4, 5122231), (61, 335884), (122, 167942), (131, 156404), (244, 83971), (262, 78202), (524, 39101), (641, 31964), (1282, 15982), (2564, 7991)]