81931135

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 125637120

約数和(自身を除く): 43705985

約数列:

[1, 5, 11, 13, 19, 37, 55, 65, 95, 143, 163, 185, 209, 247, 407, 481, 703, 715, 815, 1045, 1235, 1793, 2035, 2119, 2405, 2717, 3097, 3515, 5291, 6031, 7733, 8965, 9139, 10595, 13585, 15485, 23309, 26455, 30155, 34067, 38665, 40261, 45695, 66341, 78403, 100529, 114589, 116545, 170335, 201305, 331705, 392015, 442871, 502645, 572945, 862433, 1260479, 1489657, 2214355, 4312165, 6302395, 7448285, 16386227, 81931135]

約数ペア:

[(1, 81931135), (5, 16386227), (11, 7448285), (13, 6302395), (19, 4312165), (37, 2214355), (55, 1489657), (65, 1260479), (95, 862433), (143, 572945), (163, 502645), (185, 442871), (209, 392015), (247, 331705), (407, 201305), (481, 170335), (703, 116545), (715, 114589), (815, 100529), (1045, 78403), (1235, 66341), (1793, 45695), (2035, 40261), (2119, 38665), (2405, 34067), (2717, 30155), (3097, 26455), (3515, 23309), (5291, 15485), (6031, 13585), (7733, 10595), (8965, 9139)]