20961472

素因数分解:

$2^6\times 7^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:749

約数の個数: 56

約数和(自身を含む): 48280320

約数和(自身を除く): 27318848

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 142, 224, 284, 448, 497, 568, 659, 994, 1136, 1318, 1988, 2272, 2636, 3976, 4544, 4613, 5272, 7952, 9226, 10544, 15904, 18452, 21088, 31808, 36904, 42176, 46789, 73808, 93578, 147616, 187156, 295232, 327523, 374312, 655046, 748624, 1310092, 1497248, 2620184, 2994496, 5240368, 10480736, 20961472]

約数ペア:

[(1, 20961472), (2, 10480736), (4, 5240368), (7, 2994496), (8, 2620184), (14, 1497248), (16, 1310092), (28, 748624), (32, 655046), (56, 374312), (64, 327523), (71, 295232), (112, 187156), (142, 147616), (224, 93578), (284, 73808), (448, 46789), (497, 42176), (568, 36904), (659, 31808), (994, 21088), (1136, 18452), (1318, 15904), (1988, 10544), (2272, 9226), (2636, 7952), (3976, 5272), (4544, 4613)]