21360891

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 10434309

約数列:

[1, 3, 17, 31, 51, 59, 93, 177, 229, 527, 687, 1003, 1581, 1829, 3009, 3893, 5487, 7099, 11679, 13511, 21297, 31093, 40533, 93279, 120683, 229687, 362049, 418841, 689061, 1256523, 7120297, 21360891]

約数ペア:

[(1, 21360891), (3, 7120297), (17, 1256523), (31, 689061), (51, 418841), (59, 362049), (93, 229687), (177, 120683), (229, 93279), (527, 40533), (687, 31093), (1003, 21297), (1581, 13511), (1829, 11679), (3009, 7099), (3893, 5487)]