21164892

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1279}}^1$

素因数の和:1490

約数の個数: 48

約数和(自身を含む): 56770560

約数和(自身を除く): 35605668

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 197, 394, 591, 788, 1182, 1279, 1379, 2364, 2558, 2758, 3837, 4137, 5116, 5516, 7674, 8274, 8953, 15348, 16548, 17906, 26859, 35812, 53718, 107436, 251963, 503926, 755889, 1007852, 1511778, 1763741, 3023556, 3527482, 5291223, 7054964, 10582446, 21164892]

約数ペア:

[(1, 21164892), (2, 10582446), (3, 7054964), (4, 5291223), (6, 3527482), (7, 3023556), (12, 1763741), (14, 1511778), (21, 1007852), (28, 755889), (42, 503926), (84, 251963), (197, 107436), (394, 53718), (591, 35812), (788, 26859), (1182, 17906), (1279, 16548), (1379, 15348), (2364, 8953), (2558, 8274), (2758, 7674), (3837, 5516), (4137, 5116)]