21010077

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:199

約数の個数: 48

約数和(自身を含む): 35112000

約数和(自身を除く): 14101923

約数列:

[1, 3, 9, 11, 27, 33, 59, 99, 109, 121, 177, 297, 327, 363, 531, 649, 981, 1089, 1199, 1593, 1947, 2943, 3267, 3597, 5841, 6431, 7139, 10791, 13189, 17523, 19293, 21417, 32373, 39567, 57879, 64251, 70741, 118701, 173637, 192753, 212223, 356103, 636669, 778151, 1910007, 2334453, 7003359, 21010077]

約数ペア:

[(1, 21010077), (3, 7003359), (9, 2334453), (11, 1910007), (27, 778151), (33, 636669), (59, 356103), (99, 212223), (109, 192753), (121, 173637), (177, 118701), (297, 70741), (327, 64251), (363, 57879), (531, 39567), (649, 32373), (981, 21417), (1089, 19293), (1199, 17523), (1593, 13189), (1947, 10791), (2943, 7139), (3267, 6431), (3597, 5841)]