21678678

素因数分解:

$2^1\times 3^4\times 7^2\times {\mathrm{2731}}^1$

素因数の和:2759

約数の個数: 60

約数和(自身を含む): 56527812

約数和(自身を除く): 34849134

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 81, 98, 126, 147, 162, 189, 294, 378, 441, 567, 882, 1134, 1323, 2646, 2731, 3969, 5462, 7938, 8193, 16386, 19117, 24579, 38234, 49158, 57351, 73737, 114702, 133819, 147474, 172053, 221211, 267638, 344106, 401457, 442422, 516159, 802914, 1032318, 1204371, 1548477, 2408742, 3096954, 3613113, 7226226, 10839339, 21678678]

約数ペア:

[(1, 21678678), (2, 10839339), (3, 7226226), (6, 3613113), (7, 3096954), (9, 2408742), (14, 1548477), (18, 1204371), (21, 1032318), (27, 802914), (42, 516159), (49, 442422), (54, 401457), (63, 344106), (81, 267638), (98, 221211), (126, 172053), (147, 147474), (162, 133819), (189, 114702), (294, 73737), (378, 57351), (441, 49158), (567, 38234), (882, 24579), (1134, 19117), (1323, 16386), (2646, 8193), (2731, 7938), (3969, 5462)]