21115276

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8287}}^1$

素因数の和:8318

約数の個数: 36

約数和(自身を含む): 46296768

約数和(自身を除く): 25181492

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8287, 16574, 33148, 58009, 107731, 116018, 215462, 232036, 406063, 430924, 754117, 812126, 1508234, 1624252, 3016468, 5278819, 10557638, 21115276]

約数ペア:

[(1, 21115276), (2, 10557638), (4, 5278819), (7, 3016468), (13, 1624252), (14, 1508234), (26, 812126), (28, 754117), (49, 430924), (52, 406063), (91, 232036), (98, 215462), (182, 116018), (196, 107731), (364, 58009), (637, 33148), (1274, 16574), (2548, 8287)]