20644844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 20481556

約数列:

[1, 2, 4, 11, 22, 44, 47, 67, 94, 134, 149, 188, 268, 298, 517, 596, 737, 1034, 1474, 1639, 2068, 2948, 3149, 3278, 6298, 6556, 7003, 9983, 12596, 14006, 19966, 28012, 34639, 39932, 69278, 77033, 109813, 138556, 154066, 219626, 308132, 439252, 469201, 938402, 1876804, 5161211, 10322422, 20644844]

約数ペア:

[(1, 20644844), (2, 10322422), (4, 5161211), (11, 1876804), (22, 938402), (44, 469201), (47, 439252), (67, 308132), (94, 219626), (134, 154066), (149, 138556), (188, 109813), (268, 77033), (298, 69278), (517, 39932), (596, 34639), (737, 28012), (1034, 19966), (1474, 14006), (1639, 12596), (2068, 9983), (2948, 7003), (3149, 6556), (3278, 6298)]