20867168

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4903}}^1$

素因数の和:4939

約数の個数: 48

約数和(自身を含む): 49432320

約数和(自身を除く): 28565152

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 4903, 9806, 19612, 34321, 39224, 68642, 78448, 93157, 137284, 156896, 186314, 274568, 372628, 549136, 652099, 745256, 1098272, 1304198, 1490512, 2608396, 2981024, 5216792, 10433584, 20867168]

約数ペア:

[(1, 20867168), (2, 10433584), (4, 5216792), (7, 2981024), (8, 2608396), (14, 1490512), (16, 1304198), (19, 1098272), (28, 745256), (32, 652099), (38, 549136), (56, 372628), (76, 274568), (112, 186314), (133, 156896), (152, 137284), (224, 93157), (266, 78448), (304, 68642), (532, 39224), (608, 34321), (1064, 19612), (2128, 9806), (4256, 4903)]