20553665

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{641}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 27665064

約数和(自身を除く): 7111399

約数列:

[1, 5, 11, 53, 55, 121, 265, 583, 605, 641, 2915, 3205, 6413, 7051, 32065, 33973, 35255, 77561, 169865, 373703, 387805, 1868515, 4110733, 20553665]

約数ペア:

[(1, 20553665), (5, 4110733), (11, 1868515), (53, 387805), (55, 373703), (121, 169865), (265, 77561), (583, 35255), (605, 33973), (641, 32065), (2915, 7051), (3205, 6413)]