18877887

素因数分解:

$3^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{751}}^1$

素因数の和:793

約数の個数: 48

約数和(自身を含む): 34291200

約数和(自身を除く): 15413313

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 133, 147, 171, 189, 399, 441, 513, 751, 931, 1197, 1323, 2253, 2793, 3591, 5257, 6759, 8379, 14269, 15771, 20277, 25137, 36799, 42807, 47313, 99883, 110397, 128421, 141939, 299649, 331191, 385263, 699181, 898947, 993573, 2097543, 2696841, 6292629, 18877887]

約数ペア:

[(1, 18877887), (3, 6292629), (7, 2696841), (9, 2097543), (19, 993573), (21, 898947), (27, 699181), (49, 385263), (57, 331191), (63, 299649), (133, 141939), (147, 128421), (171, 110397), (189, 99883), (399, 47313), (441, 42807), (513, 36799), (751, 25137), (931, 20277), (1197, 15771), (1323, 14269), (2253, 8379), (2793, 6759), (3591, 5257)]