18640083

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 33914880

約数和(自身を除く): 15274797

約数列:

[1, 3, 7, 11, 19, 21, 31, 33, 57, 77, 93, 133, 137, 209, 217, 231, 341, 399, 411, 589, 627, 651, 959, 1023, 1463, 1507, 1767, 2387, 2603, 2877, 4123, 4247, 4389, 4521, 6479, 7161, 7809, 10549, 12369, 12741, 18221, 19437, 28633, 29729, 31647, 45353, 46717, 54663, 80693, 85899, 89187, 136059, 140151, 200431, 242079, 327019, 564851, 601293, 887623, 981057, 1694553, 2662869, 6213361, 18640083]

約数ペア:

[(1, 18640083), (3, 6213361), (7, 2662869), (11, 1694553), (19, 981057), (21, 887623), (31, 601293), (33, 564851), (57, 327019), (77, 242079), (93, 200431), (133, 140151), (137, 136059), (209, 89187), (217, 85899), (231, 80693), (341, 54663), (399, 46717), (411, 45353), (589, 31647), (627, 29729), (651, 28633), (959, 19437), (1023, 18221), (1463, 12741), (1507, 12369), (1767, 10549), (2387, 7809), (2603, 7161), (2877, 6479), (4123, 4521), (4247, 4389)]