20839819

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 7545461

約数列:

[1, 7, 11, 13, 77, 91, 109, 143, 191, 763, 1001, 1199, 1337, 1417, 2101, 2483, 8393, 9919, 14707, 15587, 17381, 20819, 27313, 109109, 145733, 191191, 229009, 270647, 1603063, 1894529, 2977117, 20839819]

約数ペア:

[(1, 20839819), (7, 2977117), (11, 1894529), (13, 1603063), (77, 270647), (91, 229009), (109, 191191), (143, 145733), (191, 109109), (763, 27313), (1001, 20819), (1199, 17381), (1337, 15587), (1417, 14707), (2101, 9919), (2483, 8393)]