20564555

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1789}}^1$

素因数の和:1835

約数の個数: 24

約数和(自身を含む): 28568400

約数和(自身を除く): 8003845

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1789, 2299, 8945, 11495, 19679, 33991, 98395, 169955, 216469, 373901, 1082345, 1869505, 4112911, 20564555]

約数ペア:

[(1, 20564555), (5, 4112911), (11, 1869505), (19, 1082345), (55, 373901), (95, 216469), (121, 169955), (209, 98395), (605, 33991), (1045, 19679), (1789, 11495), (2299, 8945)]