21197456

素因数分解:

$2^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3571}}^1$

素因数の和:3639

約数の個数: 40

約数和(自身を含む): 47836224

約数和(自身を除く): 26638768

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 53, 56, 106, 112, 212, 371, 424, 742, 848, 1484, 2968, 3571, 5936, 7142, 14284, 24997, 28568, 49994, 57136, 99988, 189263, 199976, 378526, 399952, 757052, 1324841, 1514104, 2649682, 3028208, 5299364, 10598728, 21197456]

約数ペア:

[(1, 21197456), (2, 10598728), (4, 5299364), (7, 3028208), (8, 2649682), (14, 1514104), (16, 1324841), (28, 757052), (53, 399952), (56, 378526), (106, 199976), (112, 189263), (212, 99988), (371, 57136), (424, 49994), (742, 28568), (848, 24997), (1484, 14284), (2968, 7142), (3571, 5936)]