21355012

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 45440640

約数和(自身を除く): 24085628

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 137, 266, 274, 293, 532, 548, 586, 959, 1172, 1918, 2051, 2603, 3836, 4102, 5206, 5567, 8204, 10412, 11134, 18221, 22268, 36442, 38969, 40141, 72884, 77938, 80282, 155876, 160564, 280987, 561974, 762679, 1123948, 1525358, 3050716, 5338753, 10677506, 21355012]

約数ペア:

[(1, 21355012), (2, 10677506), (4, 5338753), (7, 3050716), (14, 1525358), (19, 1123948), (28, 762679), (38, 561974), (76, 280987), (133, 160564), (137, 155876), (266, 80282), (274, 77938), (293, 72884), (532, 40141), (548, 38969), (586, 36442), (959, 22268), (1172, 18221), (1918, 11134), (2051, 10412), (2603, 8204), (3836, 5567), (4102, 5206)]