20851400

素因数分解:

$2^3\times 5^2\times {\mathrm{137}}^1\times {\mathrm{761}}^1$

素因数の和:914

約数の個数: 48

約数和(自身を含む): 48897540

約数和(自身を除く): 28046140

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 137, 200, 274, 548, 685, 761, 1096, 1370, 1522, 2740, 3044, 3425, 3805, 5480, 6088, 6850, 7610, 13700, 15220, 19025, 27400, 30440, 38050, 76100, 104257, 152200, 208514, 417028, 521285, 834056, 1042570, 2085140, 2606425, 4170280, 5212850, 10425700, 20851400]

約数ペア:

[(1, 20851400), (2, 10425700), (4, 5212850), (5, 4170280), (8, 2606425), (10, 2085140), (20, 1042570), (25, 834056), (40, 521285), (50, 417028), (100, 208514), (137, 152200), (200, 104257), (274, 76100), (548, 38050), (685, 30440), (761, 27400), (1096, 19025), (1370, 15220), (1522, 13700), (2740, 7610), (3044, 6850), (3425, 6088), (3805, 5480)]