20570409

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 31920000

約数和(自身を除く): 11349591

約数列:

[1, 3, 9, 27, 37, 59, 111, 177, 333, 349, 531, 999, 1047, 1593, 2183, 3141, 6549, 9423, 12913, 19647, 20591, 38739, 58941, 61773, 116217, 185319, 348651, 555957, 761867, 2285601, 6856803, 20570409]

約数ペア:

[(1, 20570409), (3, 6856803), (9, 2285601), (27, 761867), (37, 555957), (59, 348651), (111, 185319), (177, 116217), (333, 61773), (349, 58941), (531, 38739), (999, 20591), (1047, 19647), (1593, 12913), (2183, 9423), (3141, 6549)]