15876

素因数分解:

$2^2\times 3^4\times 7^2$

素因数の和:30

約数の個数: 45

約数和(自身を含む): 48279

約数和(自身を除く): 32403

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 49, 54, 63, 81, 84, 98, 108, 126, 147, 162, 189, 196, 252, 294, 324, 378, 441, 567, 588, 756, 882, 1134, 1323, 1764, 2268, 2646, 3969, 5292, 7938, 15876]

約数ペア:

[(1, 15876), (2, 7938), (3, 5292), (4, 3969), (6, 2646), (7, 2268), (9, 1764), (12, 1323), (14, 1134), (18, 882), (21, 756), (27, 588), (28, 567), (36, 441), (42, 378), (49, 324), (54, 294), (63, 252), (81, 196), (84, 189), (98, 162), (108, 147)]