20080004

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1933}}^1$

素因数の和:2004

約数の個数: 36

約数和(自身を含む): 41669964

約数和(自身を除く): 21589960

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 742, 1484, 1933, 2597, 3866, 5194, 7732, 10388, 13531, 27062, 54124, 94717, 102449, 189434, 204898, 378868, 409796, 717143, 1434286, 2868572, 5020001, 10040002, 20080004]

約数ペア:

[(1, 20080004), (2, 10040002), (4, 5020001), (7, 2868572), (14, 1434286), (28, 717143), (49, 409796), (53, 378868), (98, 204898), (106, 189434), (196, 102449), (212, 94717), (371, 54124), (742, 27062), (1484, 13531), (1933, 10388), (2597, 7732), (3866, 5194)]