20580538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:582

約数の個数: 32

約数和(自身を含む): 35614080

約数和(自身を除く): 15033542

約数列:

[1, 2, 11, 22, 23, 46, 89, 178, 253, 457, 506, 914, 979, 1958, 2047, 4094, 5027, 10054, 10511, 21022, 22517, 40673, 45034, 81346, 115621, 231242, 447403, 894806, 935479, 1870958, 10290269, 20580538]

約数ペア:

[(1, 20580538), (2, 10290269), (11, 1870958), (22, 935479), (23, 894806), (46, 447403), (89, 231242), (178, 115621), (253, 81346), (457, 45034), (506, 40673), (914, 22517), (979, 21022), (1958, 10511), (2047, 10054), (4094, 5027)]