20781926

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{613}}^1$

素因数の和:716

約数の個数: 32

約数和(自身を含む): 36073728

約数和(自身を除く): 15291802

約数列:

[1, 2, 11, 22, 23, 46, 67, 134, 253, 506, 613, 737, 1226, 1474, 1541, 3082, 6743, 13486, 14099, 16951, 28198, 33902, 41071, 82142, 155089, 310178, 451781, 903562, 944633, 1889266, 10390963, 20781926]

約数ペア:

[(1, 20781926), (2, 10390963), (11, 1889266), (22, 944633), (23, 903562), (46, 451781), (67, 310178), (134, 155089), (253, 82142), (506, 41071), (613, 33902), (737, 28198), (1226, 16951), (1474, 14099), (1541, 13486), (3082, 6743)]