20939912

素因数分解:

$2^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{5581}}^1$

素因数の和:5661

約数の個数: 32

約数和(自身を含む): 45549120

約数和(自身を除く): 24609208

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 67, 134, 268, 469, 536, 938, 1876, 3752, 5581, 11162, 22324, 39067, 44648, 78134, 156268, 312536, 373927, 747854, 1495708, 2617489, 2991416, 5234978, 10469956, 20939912]

約数ペア:

[(1, 20939912), (2, 10469956), (4, 5234978), (7, 2991416), (8, 2617489), (14, 1495708), (28, 747854), (56, 373927), (67, 312536), (134, 156268), (268, 78134), (469, 44648), (536, 39067), (938, 22324), (1876, 11162), (3752, 5581)]