21876456

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{661}}^1$

素因数の和:874

約数の個数: 64

約数和(自身を含む): 62916480

約数和(自身を除く): 41040024

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 197, 394, 591, 661, 788, 1182, 1322, 1379, 1576, 1983, 2364, 2644, 2758, 3966, 4137, 4627, 4728, 5288, 5516, 7932, 8274, 9254, 11032, 13881, 15864, 16548, 18508, 27762, 33096, 37016, 55524, 111048, 130217, 260434, 390651, 520868, 781302, 911519, 1041736, 1562604, 1823038, 2734557, 3125208, 3646076, 5469114, 7292152, 10938228, 21876456]

約数ペア:

[(1, 21876456), (2, 10938228), (3, 7292152), (4, 5469114), (6, 3646076), (7, 3125208), (8, 2734557), (12, 1823038), (14, 1562604), (21, 1041736), (24, 911519), (28, 781302), (42, 520868), (56, 390651), (84, 260434), (168, 130217), (197, 111048), (394, 55524), (591, 37016), (661, 33096), (788, 27762), (1182, 18508), (1322, 16548), (1379, 15864), (1576, 13881), (1983, 11032), (2364, 9254), (2644, 8274), (2758, 7932), (3966, 5516), (4137, 5288), (4627, 4728)]