20279997

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:179

約数の個数: 48

約数和(自身を含む): 33598080

約数和(自身を除く): 13318083

約数列:

[1, 3, 9, 17, 23, 27, 51, 69, 113, 153, 207, 289, 339, 391, 459, 621, 867, 1017, 1173, 1921, 2599, 2601, 3051, 3519, 5763, 6647, 7797, 7803, 10557, 17289, 19941, 23391, 32657, 44183, 51867, 59823, 70173, 97971, 132549, 179469, 293913, 397647, 751111, 881739, 1192941, 2253333, 6759999, 20279997]

約数ペア:

[(1, 20279997), (3, 6759999), (9, 2253333), (17, 1192941), (23, 881739), (27, 751111), (51, 397647), (69, 293913), (113, 179469), (153, 132549), (207, 97971), (289, 70173), (339, 59823), (391, 51867), (459, 44183), (621, 32657), (867, 23391), (1017, 19941), (1173, 17289), (1921, 10557), (2599, 7803), (2601, 7797), (3051, 6647), (3519, 5763)]