31857921

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{29}}^2\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 48

約数和(自身を含む): 51841920

約数和(自身を除く): 19983999

約数列:

[1, 3, 9, 23, 27, 29, 61, 69, 87, 183, 207, 261, 549, 621, 667, 783, 841, 1403, 1647, 1769, 2001, 2523, 4209, 5307, 6003, 7569, 12627, 15921, 18009, 19343, 22707, 37881, 40687, 47763, 51301, 58029, 122061, 153903, 174087, 366183, 461709, 522261, 1098549, 1179923, 1385127, 3539769, 10619307, 31857921]

約数ペア:

[(1, 31857921), (3, 10619307), (9, 3539769), (23, 1385127), (27, 1179923), (29, 1098549), (61, 522261), (69, 461709), (87, 366183), (183, 174087), (207, 153903), (261, 122061), (549, 58029), (621, 51301), (667, 47763), (783, 40687), (841, 37881), (1403, 22707), (1647, 19343), (1769, 18009), (2001, 15921), (2523, 12627), (4209, 7569), (5307, 6003)]