21034539

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{313}}^1$

素因数の和:472

約数の個数: 32

約数和(自身を含む): 33158400

約数和(自身を除く): 12123861

約数列:

[1, 3, 9, 19, 27, 57, 131, 171, 313, 393, 513, 939, 1179, 2489, 2817, 3537, 5947, 7467, 8451, 17841, 22401, 41003, 53523, 67203, 123009, 160569, 369027, 779057, 1107081, 2337171, 7011513, 21034539]

約数ペア:

[(1, 21034539), (3, 7011513), (9, 2337171), (19, 1107081), (27, 779057), (57, 369027), (131, 160569), (171, 123009), (313, 67203), (393, 53523), (513, 41003), (939, 22401), (1179, 17841), (2489, 8451), (2817, 7467), (3537, 5947)]