21518154

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:840

約数の個数: 72

約数和(自身を含む): 56055168

約数和(自身を除く): 34537014

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 31, 42, 49, 62, 63, 93, 98, 126, 147, 186, 217, 279, 294, 434, 441, 558, 651, 787, 882, 1302, 1519, 1574, 1953, 2361, 3038, 3906, 4557, 4722, 5509, 7083, 9114, 11018, 13671, 14166, 16527, 24397, 27342, 33054, 38563, 48794, 49581, 73191, 77126, 99162, 115689, 146382, 170779, 219573, 231378, 341558, 347067, 439146, 512337, 694134, 1024674, 1195453, 1537011, 2390906, 3074022, 3586359, 7172718, 10759077, 21518154]

約数ペア:

[(1, 21518154), (2, 10759077), (3, 7172718), (6, 3586359), (7, 3074022), (9, 2390906), (14, 1537011), (18, 1195453), (21, 1024674), (31, 694134), (42, 512337), (49, 439146), (62, 347067), (63, 341558), (93, 231378), (98, 219573), (126, 170779), (147, 146382), (186, 115689), (217, 99162), (279, 77126), (294, 73191), (434, 49581), (441, 48794), (558, 38563), (651, 33054), (787, 27342), (882, 24397), (1302, 16527), (1519, 14166), (1574, 13671), (1953, 11018), (2361, 9114), (3038, 7083), (3906, 5509), (4557, 4722)]