207981081

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1409}}^1$

素因数の和:1507

約数の個数: 64

約数和(自身を含む): 389836800

約数和(自身を除く): 181855719

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 71, 77, 99, 189, 213, 231, 297, 497, 639, 693, 781, 1409, 1491, 1917, 2079, 2343, 4227, 4473, 5467, 7029, 9863, 12681, 13419, 15499, 16401, 21087, 29589, 38043, 46497, 49203, 88767, 100039, 108493, 139491, 147609, 266301, 300117, 325479, 418473, 700273, 900351, 976437, 1100429, 2100819, 2701053, 2929311, 3301287, 6302457, 7703003, 9903861, 18907371, 23109009, 29711583, 69327027, 207981081]

約数ペア:

[(1, 207981081), (3, 69327027), (7, 29711583), (9, 23109009), (11, 18907371), (21, 9903861), (27, 7703003), (33, 6302457), (63, 3301287), (71, 2929311), (77, 2701053), (99, 2100819), (189, 1100429), (213, 976437), (231, 900351), (297, 700273), (497, 418473), (639, 325479), (693, 300117), (781, 266301), (1409, 147609), (1491, 139491), (1917, 108493), (2079, 100039), (2343, 88767), (4227, 49203), (4473, 46497), (5467, 38043), (7029, 29589), (9863, 21087), (12681, 16401), (13419, 15499)]