17981271

素因数分解:

$3^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2$

素因数の和:95

約数の個数: 72

約数和(自身を含む): 34699392

約数和(自身を除く): 16718121

約数列:

[1, 3, 7, 9, 11, 21, 27, 31, 33, 63, 77, 81, 93, 99, 189, 217, 231, 243, 279, 297, 341, 567, 651, 693, 837, 891, 961, 1023, 1701, 1953, 2079, 2387, 2511, 2673, 2883, 3069, 5859, 6237, 6727, 7161, 7533, 8649, 9207, 10571, 17577, 18711, 20181, 21483, 25947, 27621, 31713, 52731, 60543, 64449, 73997, 77841, 82863, 95139, 181629, 193347, 221991, 233523, 285417, 544887, 580041, 665973, 856251, 1634661, 1997919, 2568753, 5993757, 17981271]

約数ペア:

[(1, 17981271), (3, 5993757), (7, 2568753), (9, 1997919), (11, 1634661), (21, 856251), (27, 665973), (31, 580041), (33, 544887), (63, 285417), (77, 233523), (81, 221991), (93, 193347), (99, 181629), (189, 95139), (217, 82863), (231, 77841), (243, 73997), (279, 64449), (297, 60543), (341, 52731), (567, 31713), (651, 27621), (693, 25947), (837, 21483), (891, 20181), (961, 18711), (1023, 17577), (1701, 10571), (1953, 9207), (2079, 8649), (2387, 7533), (2511, 7161), (2673, 6727), (2883, 6237), (3069, 5859)]