21493818

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{547}}^1$

素因数の和:651

約数の個数: 48

約数和(自身を含む): 48728160

約数和(自身を除く): 27234342

約数列:

[1, 2, 3, 6, 9, 18, 37, 59, 74, 111, 118, 177, 222, 333, 354, 531, 547, 666, 1062, 1094, 1641, 2183, 3282, 4366, 4923, 6549, 9846, 13098, 19647, 20239, 32273, 39294, 40478, 60717, 64546, 96819, 121434, 182151, 193638, 290457, 364302, 580914, 1194101, 2388202, 3582303, 7164606, 10746909, 21493818]

約数ペア:

[(1, 21493818), (2, 10746909), (3, 7164606), (6, 3582303), (9, 2388202), (18, 1194101), (37, 580914), (59, 364302), (74, 290457), (111, 193638), (118, 182151), (177, 121434), (222, 96819), (333, 64546), (354, 60717), (531, 40478), (547, 39294), (666, 32273), (1062, 20239), (1094, 19647), (1641, 13098), (2183, 9846), (3282, 6549), (4366, 4923)]