221394519

素因数分解:

$3^3\times {\mathrm{17}}^3\times {\mathrm{1669}}^1$

素因数の和:1729

約数の個数: 32

約数和(自身を含む): 348696000

約数和(自身を除く): 127301481

約数列:

[1, 3, 9, 17, 27, 51, 153, 289, 459, 867, 1669, 2601, 4913, 5007, 7803, 14739, 15021, 28373, 44217, 45063, 85119, 132651, 255357, 482341, 766071, 1447023, 4341069, 8199797, 13023207, 24599391, 73798173, 221394519]

約数ペア:

[(1, 221394519), (3, 73798173), (9, 24599391), (17, 13023207), (27, 8199797), (51, 4341069), (153, 1447023), (289, 766071), (459, 482341), (867, 255357), (1669, 132651), (2601, 85119), (4913, 45063), (5007, 44217), (7803, 28373), (14739, 15021)]