20728083

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:515

約数の個数: 32

約数和(自身を含む): 31352832

約数和(自身を除く): 10624749

約数列:

[1, 3, 17, 23, 41, 51, 69, 123, 391, 431, 697, 943, 1173, 1293, 2091, 2829, 7327, 9913, 16031, 17671, 21981, 29739, 48093, 53013, 168521, 300407, 406433, 505563, 901221, 1219299, 6909361, 20728083]

約数ペア:

[(1, 20728083), (3, 6909361), (17, 1219299), (23, 901221), (41, 505563), (51, 406433), (69, 300407), (123, 168521), (391, 53013), (431, 48093), (697, 29739), (943, 21981), (1173, 17671), (1293, 16031), (2091, 9913), (2829, 7327)]