20887384

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{293}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 27093416

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 67, 76, 133, 134, 152, 266, 268, 293, 469, 532, 536, 586, 938, 1064, 1172, 1273, 1876, 2051, 2344, 2546, 3752, 4102, 5092, 5567, 8204, 8911, 10184, 11134, 16408, 17822, 19631, 22268, 35644, 38969, 39262, 44536, 71288, 77938, 78524, 137417, 155876, 157048, 274834, 311752, 372989, 549668, 745978, 1099336, 1491956, 2610923, 2983912, 5221846, 10443692, 20887384]

約数ペア:

[(1, 20887384), (2, 10443692), (4, 5221846), (7, 2983912), (8, 2610923), (14, 1491956), (19, 1099336), (28, 745978), (38, 549668), (56, 372989), (67, 311752), (76, 274834), (133, 157048), (134, 155876), (152, 137417), (266, 78524), (268, 77938), (293, 71288), (469, 44536), (532, 39262), (536, 38969), (586, 35644), (938, 22268), (1064, 19631), (1172, 17822), (1273, 16408), (1876, 11134), (2051, 10184), (2344, 8911), (2546, 8204), (3752, 5567), (4102, 5092)]