20121183

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{743}}^1$

素因数の和:828

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 12019617

約数列:

[1, 3, 9, 17, 27, 51, 59, 153, 177, 459, 531, 743, 1003, 1593, 2229, 3009, 6687, 9027, 12631, 20061, 27081, 37893, 43837, 113679, 131511, 341037, 394533, 745229, 1183599, 2235687, 6707061, 20121183]

約数ペア:

[(1, 20121183), (3, 6707061), (9, 2235687), (17, 1183599), (27, 745229), (51, 394533), (59, 341037), (153, 131511), (177, 113679), (459, 43837), (531, 37893), (743, 27081), (1003, 20061), (1593, 12631), (2229, 9027), (3009, 6687)]