20745856

素因数分解:

$2^7\times {\mathrm{61}}^1\times {\mathrm{2657}}^1$

素因数の和:2732

約数の個数: 32

約数和(自身を含む): 42022980

約数和(自身を除く): 21277124

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 244, 488, 976, 1952, 2657, 3904, 5314, 7808, 10628, 21256, 42512, 85024, 162077, 170048, 324154, 340096, 648308, 1296616, 2593232, 5186464, 10372928, 20745856]

約数ペア:

[(1, 20745856), (2, 10372928), (4, 5186464), (8, 2593232), (16, 1296616), (32, 648308), (61, 340096), (64, 324154), (122, 170048), (128, 162077), (244, 85024), (488, 42512), (976, 21256), (1952, 10628), (2657, 7808), (3904, 5314)]