18676791

素因数分解:

$3^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{743}}^1$

素因数の和:785

約数の個数: 48

約数和(自身を含む): 33926400

約数和(自身を除く): 15249609

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 133, 147, 171, 189, 399, 441, 513, 743, 931, 1197, 1323, 2229, 2793, 3591, 5201, 6687, 8379, 14117, 15603, 20061, 25137, 36407, 42351, 46809, 98819, 109221, 127053, 140427, 296457, 327663, 381159, 691733, 889371, 982989, 2075199, 2668113, 6225597, 18676791]

約数ペア:

[(1, 18676791), (3, 6225597), (7, 2668113), (9, 2075199), (19, 982989), (21, 889371), (27, 691733), (49, 381159), (57, 327663), (63, 296457), (133, 140427), (147, 127053), (171, 109221), (189, 98819), (399, 46809), (441, 42351), (513, 36407), (743, 25137), (931, 20061), (1197, 15603), (1323, 14117), (2229, 8379), (2793, 6687), (3591, 5201)]