28290951

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:493

約数の個数: 40

約数和(自身を含む): 46307184

約数和(自身を除く): 18016233

約数列:

[1, 3, 9, 13, 27, 39, 67, 81, 117, 201, 351, 401, 603, 871, 1053, 1203, 1809, 2613, 3609, 5213, 5427, 7839, 10827, 15639, 23517, 26867, 32481, 46917, 70551, 80601, 140751, 241803, 349271, 422253, 725409, 1047813, 2176227, 3143439, 9430317, 28290951]

約数ペア:

[(1, 28290951), (3, 9430317), (9, 3143439), (13, 2176227), (27, 1047813), (39, 725409), (67, 422253), (81, 349271), (117, 241803), (201, 140751), (351, 80601), (401, 70551), (603, 46917), (871, 32481), (1053, 26867), (1203, 23517), (1809, 15639), (2613, 10827), (3609, 7839), (5213, 5427)]