20682508

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 47056464

約数和(自身を除く): 26373956

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 53, 77, 98, 106, 154, 181, 196, 212, 308, 362, 371, 539, 583, 724, 742, 1078, 1166, 1267, 1484, 1991, 2156, 2332, 2534, 2597, 3982, 4081, 5068, 5194, 7964, 8162, 8869, 9593, 10388, 13937, 16324, 17738, 19186, 27874, 28567, 35476, 38372, 55748, 57134, 67151, 97559, 105523, 114268, 134302, 195118, 211046, 268604, 390236, 422092, 470057, 738661, 940114, 1477322, 1880228, 2954644, 5170627, 10341254, 20682508]

約数ペア:

[(1, 20682508), (2, 10341254), (4, 5170627), (7, 2954644), (11, 1880228), (14, 1477322), (22, 940114), (28, 738661), (44, 470057), (49, 422092), (53, 390236), (77, 268604), (98, 211046), (106, 195118), (154, 134302), (181, 114268), (196, 105523), (212, 97559), (308, 67151), (362, 57134), (371, 55748), (539, 38372), (583, 35476), (724, 28567), (742, 27874), (1078, 19186), (1166, 17738), (1267, 16324), (1484, 13937), (1991, 10388), (2156, 9593), (2332, 8869), (2534, 8162), (2597, 7964), (3982, 5194), (4081, 5068)]