81485271

素因数分解:

$3^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1049}}^1$

素因数の和:1205

約数の個数: 40

約数和(自身を含む): 140263200

約数和(自身を除く): 58777929

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 137, 189, 411, 567, 959, 1049, 1233, 2877, 3147, 3699, 7343, 8631, 9441, 11097, 22029, 25893, 28323, 66087, 77679, 84969, 143713, 198261, 431139, 594783, 1005991, 1293417, 3017973, 3880251, 9053919, 11640753, 27161757, 81485271]

約数ペア:

[(1, 81485271), (3, 27161757), (7, 11640753), (9, 9053919), (21, 3880251), (27, 3017973), (63, 1293417), (81, 1005991), (137, 594783), (189, 431139), (411, 198261), (567, 143713), (959, 84969), (1049, 77679), (1233, 66087), (2877, 28323), (3147, 25893), (3699, 22029), (7343, 11097), (8631, 9441)]