20417787

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{79}}^1$

素因数の和:192

約数の個数: 36

約数和(自身を含む): 32861920

約数和(自身を除く): 12444133

約数列:

[1, 3, 9, 13, 39, 47, 79, 117, 141, 237, 423, 611, 711, 1027, 1833, 2209, 3081, 3713, 5499, 6627, 9243, 11139, 19881, 28717, 33417, 48269, 86151, 144807, 174511, 258453, 434421, 523533, 1570599, 2268643, 6805929, 20417787]

約数ペア:

[(1, 20417787), (3, 6805929), (9, 2268643), (13, 1570599), (39, 523533), (47, 434421), (79, 258453), (117, 174511), (141, 144807), (237, 86151), (423, 48269), (611, 33417), (711, 28717), (1027, 19881), (1833, 11139), (2209, 9243), (3081, 6627), (3713, 5499)]