20287722

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{509}}^1$

素因数の和:607

約数の個数: 64

約数和(自身を含む): 50722560

約数和(自身を除く): 30434838

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 73, 78, 91, 146, 182, 219, 273, 438, 509, 511, 546, 949, 1018, 1022, 1527, 1533, 1898, 2847, 3054, 3066, 3563, 5694, 6617, 6643, 7126, 10689, 13234, 13286, 19851, 19929, 21378, 37157, 39702, 39858, 46319, 74314, 92638, 111471, 138957, 222942, 260099, 277914, 483041, 520198, 780297, 966082, 1449123, 1560594, 2898246, 3381287, 6762574, 10143861, 20287722]

約数ペア:

[(1, 20287722), (2, 10143861), (3, 6762574), (6, 3381287), (7, 2898246), (13, 1560594), (14, 1449123), (21, 966082), (26, 780297), (39, 520198), (42, 483041), (73, 277914), (78, 260099), (91, 222942), (146, 138957), (182, 111471), (219, 92638), (273, 74314), (438, 46319), (509, 39858), (511, 39702), (546, 37157), (949, 21378), (1018, 19929), (1022, 19851), (1527, 13286), (1533, 13234), (1898, 10689), (2847, 7126), (3054, 6643), (3066, 6617), (3563, 5694)]