21554181

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1423}}^1$

素因数の和:1463

約数の個数: 40

約数和(自身を含む): 37217664

約数和(自身を除く): 15663483

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 81, 99, 153, 187, 297, 459, 561, 891, 1377, 1423, 1683, 4269, 5049, 12807, 15147, 15653, 24191, 38421, 46959, 72573, 115263, 140877, 217719, 266101, 422631, 653157, 798303, 1267893, 1959471, 2394909, 7184727, 21554181]

約数ペア:

[(1, 21554181), (3, 7184727), (9, 2394909), (11, 1959471), (17, 1267893), (27, 798303), (33, 653157), (51, 422631), (81, 266101), (99, 217719), (153, 140877), (187, 115263), (297, 72573), (459, 46959), (561, 38421), (891, 24191), (1377, 15653), (1423, 15147), (1683, 12807), (4269, 5049)]