21654927

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 38272000

約数和(自身を除く): 16617073

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 79, 133, 171, 229, 237, 399, 553, 687, 711, 1197, 1501, 1603, 1659, 2061, 4351, 4503, 4809, 4977, 10507, 13053, 13509, 14427, 18091, 30457, 31521, 39159, 54273, 91371, 94563, 126637, 162819, 274113, 343729, 379911, 1031187, 1139733, 2406103, 3093561, 7218309, 21654927]

約数ペア:

[(1, 21654927), (3, 7218309), (7, 3093561), (9, 2406103), (19, 1139733), (21, 1031187), (57, 379911), (63, 343729), (79, 274113), (133, 162819), (171, 126637), (229, 94563), (237, 91371), (399, 54273), (553, 39159), (687, 31521), (711, 30457), (1197, 18091), (1501, 14427), (1603, 13509), (1659, 13053), (2061, 10507), (4351, 4977), (4503, 4809)]