20897044

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 22567916

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 109, 164, 167, 218, 287, 334, 436, 574, 668, 763, 1148, 1169, 1526, 2338, 3052, 4469, 4676, 6847, 8938, 13694, 17876, 18203, 27388, 31283, 36406, 47929, 62566, 72812, 95858, 125132, 127421, 191716, 254842, 509684, 746323, 1492646, 2985292, 5224261, 10448522, 20897044]

約数ペア:

[(1, 20897044), (2, 10448522), (4, 5224261), (7, 2985292), (14, 1492646), (28, 746323), (41, 509684), (82, 254842), (109, 191716), (164, 127421), (167, 125132), (218, 95858), (287, 72812), (334, 62566), (436, 47929), (574, 36406), (668, 31283), (763, 27388), (1148, 18203), (1169, 17876), (1526, 13694), (2338, 8938), (3052, 6847), (4469, 4676)]